County Detail Report for 8-Hour (2015), 8-Hour (2008), 8-Hour Ozone (1997-Revoked) and 1-Hour (1979-Revoked)

Data is current as of November 30, 2025

The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
The asterisk (*) indicates only a portion of the county is included in the designated nonattainment area (NA).

Listed by State, County, NAAQS      * Part County NA     NA Area Name (Classification, if applicable)
ALABAMA
Jefferson County
8-Hour Ozone (1997)				Birmingham, AL - (Former Subpart 1)
1-Hour Ozone (1979)				Birmingham, AL - (Marginal)
Shelby County
8-Hour Ozone (1997)				Birmingham, AL - (Former Subpart 1)
1-Hour Ozone (1979)				Birmingham, AL - (Marginal)
ARIZONA
Gila County
8-Hour Ozone (2015)			*	Phoenix-Mesa, AZ - (Moderate)
Maricopa County
8-Hour Ozone (1997)			*	Phoenix-Mesa, AZ - (Marginal)
1-Hour Ozone (1979)			*	Phoenix, AZ - (Serious)
8-Hour Ozone (2008)			*	Phoenix-Mesa, AZ - (Moderate)
8-Hour Ozone (2015)			*	Phoenix-Mesa, AZ - (Moderate)
Pinal County
8-Hour Ozone (1997)			*	Phoenix-Mesa, AZ - (Marginal)
8-Hour Ozone (2008)			*	Phoenix-Mesa, AZ - (Moderate)
8-Hour Ozone (2015)			*	Phoenix-Mesa, AZ - (Moderate)
Yuma County
8-Hour Ozone (2015)			*	Yuma, AZ - (Marginal)
ARKANSAS
Crittenden County
8-Hour Ozone (1997)				Memphis, TN-AR - (Moderate)
8-Hour Ozone (2008)				Memphis, TN-MS-AR - (Marginal)
CALIFORNIA
Alameda County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
Amador County
8-Hour Ozone (1997)				Amador and Calaveras Cos. (Central Mountain Cos.), CA - (Moderate)
8-Hour Ozone (2015)				Amador County, CA - (Marginal)
Butte County
8-Hour Ozone (1997)				Chico, CA - (Marginal)
1-Hour Ozone (1979)				Chico, CA - (Section 185A)
8-Hour Ozone (2008)				Chico (Butte County), CA - (Marginal)
8-Hour Ozone (2015)				Butte County, CA - (Marginal)
Calaveras County
8-Hour Ozone (1997)				Amador and Calaveras Cos. (Central Mountain Cos.), CA - (Moderate)
8-Hour Ozone (2008)				Calaveras County, CA - (Marginal)
8-Hour Ozone (2015)				Calaveras County, CA - (Marginal)
Contra Costa County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
El Dorado County
8-Hour Ozone (1997)			*	Sacramento Metro, CA - (Severe 15)
1-Hour Ozone (1979)			*	Sacramento Metro, CA - (Severe-15)
8-Hour Ozone (2008)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2015)			*	Sacramento Metro, CA - (Serious)
Fresno County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Imperial County
8-Hour Ozone (1997)				Imperial County, CA - (Moderate)
1-Hour Ozone (1979)				Imperial County, CA - (Section 185A)
8-Hour Ozone (2008)				Imperial County, CA - (Moderate)
8-Hour Ozone (2015)				Imperial County, CA - (Marginal)
Kern County
8-Hour Ozone (1997)			*	Kern County (Eastern Kern), CA - (Moderate)
8-Hour Ozone (1997)			*	San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)			*	East Kern County, CA - (Serious)
1-Hour Ozone (1979)			*	San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)			*	Kern County (Eastern Kern), CA - (Severe 15)
8-Hour Ozone (2008)			*	San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)			*	Kern County (Eastern Kern), CA - (Serious)
8-Hour Ozone (2015)			*	San Joaquin Valley, CA - (Extreme)
Kings County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Los Angeles County
8-Hour Ozone (1997)			*	Los Angeles and San Bernardino Counties (Western Mojave Desert), CA - (Severe 15)
8-Hour Ozone (1997)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)			*	Southeast Desert Modified AQMA, CA - (Severe-17)
8-Hour Ozone (2008)			*	Los Angeles-San Bernardino Counties (West Mojave Desert), CA - (Severe 15)
8-Hour Ozone (2008)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2015)			*	Los Angeles-San Bernardino Counties (West Mojave Desert), CA - (Severe 15)
8-Hour Ozone (2015)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
Madera County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Marin County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
Mariposa County
8-Hour Ozone (1997)				Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA - (Moderate)
8-Hour Ozone (2008)				Mariposa County, CA - (Moderate)
8-Hour Ozone (2015)				Mariposa County, CA - (Moderate)
Merced County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Monterey County
1-Hour Ozone (1979)				Monterey Bay, CA - (Moderate)
Napa County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
Nevada County
8-Hour Ozone (1997)			*	Nevada County (Western part), CA - (Moderate)
8-Hour Ozone (2008)			*	Nevada County (Western part), CA - (Serious)
8-Hour Ozone (2015)			*	Nevada County (Western part), CA - (Serious)
Orange County
8-Hour Ozone (1997)				Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)				Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2008)				Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2015)				Los Angeles-South Coast Air Basin, CA - (Extreme)
Placer County
8-Hour Ozone (1997)			*	Sacramento Metro, CA - (Severe 15)
1-Hour Ozone (1979)			*	Sacramento Metro, CA - (Severe-15)
8-Hour Ozone (2008)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2015)			*	Sacramento Metro, CA - (Serious)
Riverside County
8-Hour Ozone (1997)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (1997)			*	Morongo Band of Mission Indians, CA - (Severe 17)
8-Hour Ozone (1997)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Severe 17)
8-Hour Ozone (1997)			*	Riverside County (Coachella Valley), CA - (Extreme)
1-Hour Ozone (1979)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)			*	Morongo Band of Mission Indians, CA - (Severe-17)
1-Hour Ozone (1979)			*	Southeast Desert Modified AQMA, CA - (Severe-17)
8-Hour Ozone (2008)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2008)			*	Morongo Band of Mission Indians, CA - (Severe 15)
8-Hour Ozone (2008)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Moderate)
8-Hour Ozone (2008)			*	Riverside County (Coachella Valley), CA - (Extreme)
8-Hour Ozone (2015)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2015)			*	Morongo Band of Mission Indians, CA - (Serious)
8-Hour Ozone (2015)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Moderate)
8-Hour Ozone (2015)			*	Riverside County (Coachella Valley), CA - (Severe 15)
Sacramento County
8-Hour Ozone (1997)				Sacramento Metro, CA - (Severe 15)
1-Hour Ozone (1979)				Sacramento Metro, CA - (Severe-15)
8-Hour Ozone (2008)				Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2015)				Sacramento Metro, CA - (Serious)
San Benito County
1-Hour Ozone (1979)				Monterey Bay, CA - (Moderate)
San Bernardino County
8-Hour Ozone (1997)			*	Los Angeles and San Bernardino Counties (Western Mojave Desert), CA - (Severe 15)
8-Hour Ozone (1997)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
1-Hour Ozone (1979)			*	Southeast Desert Modified AQMA, CA - (Severe-17)
8-Hour Ozone (2008)			*	Los Angeles-San Bernardino Counties (West Mojave Desert), CA - (Severe 15)
8-Hour Ozone (2008)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
8-Hour Ozone (2015)			*	Los Angeles-San Bernardino Counties (West Mojave Desert), CA - (Severe 15)
8-Hour Ozone (2015)			*	Los Angeles-South Coast Air Basin, CA - (Extreme)
San Diego County
8-Hour Ozone (1997)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Severe 17)
8-Hour Ozone (1997)			*	San Diego, CA - (Moderate)
1-Hour Ozone (1979)				San Diego, CA - (Serious)
8-Hour Ozone (2008)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Moderate)
8-Hour Ozone (2008)			*	San Diego County, CA - (Severe 15)
8-Hour Ozone (2015)			*	Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA - (Moderate)
8-Hour Ozone (2015)			*	San Diego County, CA - (Severe 15)
San Francisco County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
San Joaquin County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
San Luis Obispo County
8-Hour Ozone (2008)			*	San Luis Obispo (Eastern San Luis Obispo), CA - (Marginal)
8-Hour Ozone (2015)			*	San Luis Obispo (Eastern part), CA - (Marginal)
San Mateo County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
Santa Barbara County
1-Hour Ozone (1979)				Santa Barbara-Santa Maria-Lompoc, CA - (Serious)
Santa Clara County
8-Hour Ozone (1997)				San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)				San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)				San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)				San Francisco Bay Area, CA - (Marginal)
Santa Cruz County
1-Hour Ozone (1979)				Monterey Bay, CA - (Moderate)
Solano County
8-Hour Ozone (1997)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (1997)			*	San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)			*	Sacramento Metro, CA - (Severe-15)
1-Hour Ozone (1979)			*	San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2008)			*	San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)			*	Sacramento Metro, CA - (Serious)
8-Hour Ozone (2015)			*	San Francisco Bay Area, CA - (Marginal)
Sonoma County
8-Hour Ozone (1997)			*	San Francisco Bay Area, CA - (Marginal)
1-Hour Ozone (1979)			*	San Francisco-Bay Area, CA - (Other)
8-Hour Ozone (2008)			*	San Francisco Bay Area, CA - (Marginal)
8-Hour Ozone (2015)			*	San Francisco Bay Area, CA - (Marginal)
Stanislaus County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Sutter County
8-Hour Ozone (1997)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (1997)			*	Sutter County (part) (Sutter Buttes), CA - (Marginal)
1-Hour Ozone (1979)			*	Sacramento Metro, CA - (Severe-15)
1-Hour Ozone (1979)			*	Yuba City, CA - (Section 185A)
8-Hour Ozone (2008)			*	Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2015)			*	Sacramento Metro, CA - (Serious)
8-Hour Ozone (2015)			*	Sutter Buttes, CA - (Marginal)
Tehama County
8-Hour Ozone (2008)			*	Tuscan Buttes, CA - (Marginal)
8-Hour Ozone (2015)			*	Tuscan Buttes, CA - (Marginal (Rural Transport))
Tulare County
8-Hour Ozone (1997)				San Joaquin Valley, CA - (Extreme)
1-Hour Ozone (1979)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2008)				San Joaquin Valley, CA - (Extreme)
8-Hour Ozone (2015)				San Joaquin Valley, CA - (Extreme)
Tuolumne County
8-Hour Ozone (1997)				Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA - (Moderate)
8-Hour Ozone (2015)				Tuolumne County, CA - (Marginal)
Ventura County
8-Hour Ozone (1997)			*	Ventura County (part), CA - (Serious)
1-Hour Ozone (1979)				Ventura County, CA - (Severe-15)
8-Hour Ozone (2008)			*	Ventura County, CA - (Serious)
8-Hour Ozone (2015)			*	Ventura County, CA - (Serious)
Yolo County
8-Hour Ozone (1997)				Sacramento Metro, CA - (Severe 15)
1-Hour Ozone (1979)				Sacramento Metro, CA - (Severe-15)
8-Hour Ozone (2008)				Sacramento Metro, CA - (Severe 15)
8-Hour Ozone (2015)				Sacramento Metro, CA - (Serious)
Yuba County
1-Hour Ozone (1979)				Yuba City, CA - (Section 185A)
COLORADO
Adams County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)			*	Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Arapahoe County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)			*	Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Boulder County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)			*	Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Broomfield County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)				Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Denver County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)				Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Douglas County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)				Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Jefferson County
8-Hour Ozone (1997)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
1-Hour Ozone (1979)				Denver-Boulder, CO - (Section 185A)
8-Hour Ozone (2008)				Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
Larimer County
8-Hour Ozone (1997)			*	Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
8-Hour Ozone (2008)			*	Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)			*	Denver Metro/North Front Range, CO - (Serious)
Weld County
8-Hour Ozone (1997)			*	Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Marginal)
8-Hour Ozone (2008)			*	Denver-Boulder-Greeley-Ft. Collins-Loveland, CO - (Severe 15)
8-Hour Ozone (2015)				Denver Metro/North Front Range, CO - (Serious)
CONNECTICUT
Fairfield County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)			*	Greater Connecticut, CT - (Serious)
1-Hour Ozone (1979)			*	New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Hartford County
8-Hour Ozone (1997)				Greater Connecticut, CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2015)				Greater Connecticut, CT - (Serious)
Litchfield County
8-Hour Ozone (1997)				Greater Connecticut, CT - (Moderate)
1-Hour Ozone (1979)			*	Greater Connecticut, CT - (Serious)
1-Hour Ozone (1979)			*	New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2015)				Greater Connecticut, CT - (Serious)
Middlesex County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
New Haven County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
New London County
8-Hour Ozone (1997)				Greater Connecticut, CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2015)				Greater Connecticut, CT - (Serious)
Tolland County
8-Hour Ozone (1997)				Greater Connecticut, CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2015)				Greater Connecticut, CT - (Serious)
Windham County
8-Hour Ozone (1997)				Greater Connecticut, CT - (Moderate)
1-Hour Ozone (1979)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2008)				Greater Connecticut, CT - (Serious)
8-Hour Ozone (2015)				Greater Connecticut, CT - (Serious)
DELAWARE
Kent County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
New Castle County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Sussex County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Sussex County, DE - (Marginal)
8-Hour Ozone (2008)				Seaford, DE - (Marginal)
DISTRICT OF COLUMBIA
District of Columbia
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
FLORIDA
Broward County
1-Hour Ozone (1979)				Miami-Fort Lauderdale-W. Palm Beach, FL - (Moderate)
Duval County
1-Hour Ozone (1979)				Jacksonville, FL - (Section 185A)
Hillsborough County
1-Hour Ozone (1979)				Tampa-St. Petersburg-Clearwater, FL - (Marginal)
Miami-Dade County
1-Hour Ozone (1979)				Miami-Fort Lauderdale-W. Palm Beach, FL - (Moderate)
Palm Beach County
1-Hour Ozone (1979)				Miami-Fort Lauderdale-W. Palm Beach, FL - (Moderate)
Pinellas County
1-Hour Ozone (1979)				Tampa-St. Petersburg-Clearwater, FL - (Marginal)
GEORGIA
Barrow County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
Bartow County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Bibb County
8-Hour Ozone (1997)				Macon, GA - (Former Subpart 1)
Carroll County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
Cherokee County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Clayton County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Cobb County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Coweta County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
DeKalb County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Douglas County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Fayette County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Forsyth County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Fulton County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Gwinnett County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Hall County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
Henry County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
8-Hour Ozone (2015)				Atlanta, GA - (Marginal)
Monroe County
8-Hour Ozone (1997)			*	Macon, GA - (Former Subpart 1)
Murray County
8-Hour Ozone (1997)			*	Murray County (Chattahoochee Nat Forest), GA - (Former Subpart 1)
Newton County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Paulding County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Rockdale County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
1-Hour Ozone (1979)				Atlanta, GA - (Severe-15)
8-Hour Ozone (2008)				Atlanta, GA - (Moderate)
Spalding County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
Walton County
8-Hour Ozone (1997)				Atlanta, GA - (Moderate)
ILLINOIS
Cook County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
DuPage County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
Grundy County
8-Hour Ozone (1997)			*	Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)			*	Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)			*	Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)			*	Chicago, IL-IN-WI - (Serious)
Jersey County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				Jersey County, IL - (Marginal)
Kane County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
Kendall County
8-Hour Ozone (1997)			*	Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)			*	Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)			*	Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)			*	Chicago, IL-IN-WI - (Serious)
Lake County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
Madison County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
McHenry County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
Monroe County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
St. Clair County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
Will County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)				Chicago, IL-IN-WI - (Serious)
INDIANA
Allen County
8-Hour Ozone (1997)				Fort Wayne, IN - (Former Subpart 1)
Boone County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Clark County
8-Hour Ozone (1997)				Louisville, KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Louisville, KY-IN - (Moderate)
8-Hour Ozone (2015)				Louisville, KY-IN - (Marginal)
Dearborn County
8-Hour Ozone (1997)			*	Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
8-Hour Ozone (2008)			*	Cincinnati, OH-KY-IN - (Marginal)
Delaware County
8-Hour Ozone (1997)				Muncie, IN - (Former Subpart 1)
Elkhart County
8-Hour Ozone (1997)				South Bend-Elkhart, IN - (Former Subpart 1)
1-Hour Ozone (1979)				South Bend-Elkhart, IN - (Marginal)
Floyd County
8-Hour Ozone (1997)				Louisville, KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Louisville, KY-IN - (Moderate)
8-Hour Ozone (2015)				Louisville, KY-IN - (Marginal)
Greene County
8-Hour Ozone (1997)				Greene County, IN - (Former Subpart 1)
Hamilton County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Hancock County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Hendricks County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Jackson County
8-Hour Ozone (1997)				Jackson County, IN - (Former Subpart 1)
Johnson County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
LaPorte County
8-Hour Ozone (1997)				La Porte County, IN - (Marginal)
Lake County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)			*	Chicago, IL-IN-WI - (Serious)
Madison County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Marion County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
1-Hour Ozone (1979)				Indianapolis, IN - (Marginal)
Morgan County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
Porter County
8-Hour Ozone (1997)				Chicago-Gary-Lake County, IL-IN - (Moderate)
1-Hour Ozone (1979)				Chicago-Gary-Lake County, IL-IN - (Severe-17)
8-Hour Ozone (2008)				Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)			*	Chicago, IL-IN-WI - (Serious)
Shelby County
8-Hour Ozone (1997)				Indianapolis, IN - (Former Subpart 1)
St. Joseph County
8-Hour Ozone (1997)				South Bend-Elkhart, IN - (Former Subpart 1)
1-Hour Ozone (1979)				South Bend-Elkhart, IN - (Marginal)
Vanderburgh County
8-Hour Ozone (1997)				Evansville, IN - (Former Subpart 1)
1-Hour Ozone (1979)				Evansville, IN - (Marginal)
Vigo County
8-Hour Ozone (1997)				Terre Haute, IN - (Former Subpart 1)
Warrick County
8-Hour Ozone (1997)				Evansville, IN - (Former Subpart 1)
KANSAS
Johnson County
1-Hour Ozone (1979)				Kansas City, MO-KS - (Other)
Wyandotte County
1-Hour Ozone (1979)				Kansas City, MO-KS - (Other)
KENTUCKY
Boone County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)			*	Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)			*	Cincinnati, OH-KY - (Moderate)
Boyd County
8-Hour Ozone (1997)				Huntington-Ashland, WV-KY - (Former Subpart 1)
1-Hour Ozone (1979)				Huntington-Ashland, WV-KY - (Moderate)
Bullitt County
8-Hour Ozone (1997)				Louisville, KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)			*	Louisville, KY-IN - (Moderate)
8-Hour Ozone (2015)				Louisville, KY-IN - (Moderate)
Campbell County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)			*	Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)			*	Cincinnati, OH-KY - (Moderate)
Christian County
8-Hour Ozone (1997)				Clarksville-Hopkinsville, TN-KY - (Former Subpart 1)
Daviess County
1-Hour Ozone (1979)				Owensboro, KY - (Marginal)
Edmonson County
1-Hour Ozone (1979)				Edmonson County, KY - (Rural Transport (Marginal))
Fayette County
1-Hour Ozone (1979)				Lexington-Fayette, KY - (Marginal)
Greenup County
1-Hour Ozone (1979)			*	Huntington-Ashland, WV-KY - (Moderate)
Hancock County
1-Hour Ozone (1979)			*	Owensboro, KY - (Marginal)
Jefferson County
8-Hour Ozone (1997)				Louisville, KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Louisville, KY-IN - (Moderate)
8-Hour Ozone (2015)				Louisville, KY-IN - (Moderate)
Kenton County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)			*	Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)			*	Cincinnati, OH-KY - (Moderate)
Livingston County
1-Hour Ozone (1979)			*	Paducah, KY - (Marginal)
Marshall County
1-Hour Ozone (1979)				Paducah, KY - (Marginal)
Oldham County
8-Hour Ozone (1997)				Louisville, KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)			*	Louisville, KY-IN - (Moderate)
8-Hour Ozone (2015)				Louisville, KY-IN - (Moderate)
Scott County
1-Hour Ozone (1979)				Lexington-Fayette, KY - (Marginal)
LOUISIANA
Ascension Parish
8-Hour Ozone (1997)				Baton Rouge, LA - (Moderate)
1-Hour Ozone (1979)				Baton Rouge, LA - (Severe-15)
8-Hour Ozone (2008)				Baton Rouge, LA - (Marginal)
Beauregard Parish
1-Hour Ozone (1979)				Beauregard Parish, LA - (Incomplete Data)
Calcasieu Parish
1-Hour Ozone (1979)				Lake Charles, LA - (Marginal)
East Baton Rouge Parish
8-Hour Ozone (1997)				Baton Rouge, LA - (Moderate)
1-Hour Ozone (1979)				Baton Rouge, LA - (Severe-15)
8-Hour Ozone (2008)				Baton Rouge, LA - (Marginal)
Grant Parish
1-Hour Ozone (1979)				Grant Parish, LA - (Incomplete Data)
Iberville Parish
8-Hour Ozone (1997)				Baton Rouge, LA - (Moderate)
1-Hour Ozone (1979)				Baton Rouge, LA - (Severe-15)
8-Hour Ozone (2008)				Baton Rouge, LA - (Marginal)
Jefferson Parish
1-Hour Ozone (1979)				New Orleans, LA - (Section 185A)
Lafayette Parish
1-Hour Ozone (1979)				Lafayette, LA - (Section 185A)
Lafourche Parish
1-Hour Ozone (1979)				Lafourche Parish, LA - (Incomplete Data)
Livingston Parish
8-Hour Ozone (1997)				Baton Rouge, LA - (Moderate)
1-Hour Ozone (1979)				Baton Rouge, LA - (Severe-15)
8-Hour Ozone (2008)				Baton Rouge, LA - (Marginal)
Orleans Parish
1-Hour Ozone (1979)				New Orleans, LA - (Section 185A)
Pointe Coupee Parish
1-Hour Ozone (1979)				Pointe Coupee Parish, LA - (Marginal)
St. Bernard Parish
1-Hour Ozone (1979)				New Orleans, LA - (Section 185A)
St. Charles Parish
1-Hour Ozone (1979)				New Orleans, LA - (Section 185A)
St. James Parish
1-Hour Ozone (1979)				St. James Parish, LA - (Incomplete Data)
St. Mary Parish
1-Hour Ozone (1979)				St. Mary Parish, LA - (Incomplete Data)
West Baton Rouge Parish
8-Hour Ozone (1997)				Baton Rouge, LA - (Moderate)
1-Hour Ozone (1979)				Baton Rouge, LA - (Severe-15)
8-Hour Ozone (2008)				Baton Rouge, LA - (Marginal)
MAINE
Androscoggin County
8-Hour Ozone (1997)			*	Portland, ME - (Marginal)
1-Hour Ozone (1979)				Lewiston-Auburn, ME - (Moderate)
Cumberland County
8-Hour Ozone (1997)			*	Portland, ME - (Marginal)
1-Hour Ozone (1979)				Portland, ME - (Moderate)
Hancock County
8-Hour Ozone (1997)			*	Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME - (Former Subpart 1)
1-Hour Ozone (1979)				Hancock County and Waldo County, ME - (Marginal)
Kennebec County
1-Hour Ozone (1979)				Lewiston-Auburn, ME - (Moderate)
Knox County
8-Hour Ozone (1997)			*	Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME - (Former Subpart 1)
1-Hour Ozone (1979)				Knox County and Lincoln County, ME - (Moderate)
Lincoln County
8-Hour Ozone (1997)			*	Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME - (Former Subpart 1)
1-Hour Ozone (1979)				Knox County and Lincoln County, ME - (Moderate)
Sagadahoc County
8-Hour Ozone (1997)				Portland, ME - (Marginal)
1-Hour Ozone (1979)				Portland, ME - (Moderate)
Waldo County
8-Hour Ozone (1997)			*	Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME - (Former Subpart 1)
1-Hour Ozone (1979)				Hancock County and Waldo County, ME - (Marginal)
York County
8-Hour Ozone (1997)			*	Portland, ME - (Marginal)
1-Hour Ozone (1979)				Portland, ME - (Moderate)
MARYLAND
Anne Arundel County
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Baltimore County
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Baltimore city
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Calvert County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Carroll County
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Cecil County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Charles County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Frederick County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Harford County
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Howard County
8-Hour Ozone (1997)				Baltimore, MD - (Serious)
1-Hour Ozone (1979)				Baltimore, MD - (Severe-15)
8-Hour Ozone (2008)				Baltimore, MD - (Moderate)
8-Hour Ozone (2015)				Baltimore, MD - (Serious)
Kent County
8-Hour Ozone (1997)				Kent and Queen Anne's Counties, MD - (Marginal)
1-Hour Ozone (1979)				Kent County and Queen Anne's County, MD - (Marginal)
Montgomery County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Prince George's County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Queen Anne's County
8-Hour Ozone (1997)				Kent and Queen Anne's Counties, MD - (Marginal)
1-Hour Ozone (1979)				Kent County and Queen Anne's County, MD - (Marginal)
MASSACHUSETTS
Barnstable County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Berkshire County
8-Hour Ozone (1997)				Springfield (W. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Springfield (Western MA), MA - (Serious)
Bristol County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Dukes County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
8-Hour Ozone (2008)				Dukes County, MA - (Marginal)
Essex County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Franklin County
8-Hour Ozone (1997)				Springfield (W. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Springfield (Western MA), MA - (Serious)
Hampden County
8-Hour Ozone (1997)				Springfield (W. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Springfield (Western MA), MA - (Serious)
Hampshire County
8-Hour Ozone (1997)				Springfield (W. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Springfield (Western MA), MA - (Serious)
Middlesex County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Nantucket County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Norfolk County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Plymouth County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Suffolk County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
Worcester County
8-Hour Ozone (1997)				Boston-Lawrence-Worcester (E. Mass), MA - (Moderate)
1-Hour Ozone (1979)				Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
MICHIGAN
Allegan County
8-Hour Ozone (1997)				Allegan County, MI - (Former Subpart 1)
1-Hour Ozone (1979)				Allegan County, MI - (Incomplete Data)
8-Hour Ozone (2015)			*	Allegan County, MI - (Serious)
Bay County
1-Hour Ozone (1979)				Saginaw-Bay City-Midland, MI - (Incomplete Data)
Benzie County
8-Hour Ozone (1997)				Benzie County, MI - (Former Subpart 1)
Berrien County
8-Hour Ozone (1997)				Benton Harbor, MI - (Former Subpart 1)
8-Hour Ozone (2015)				Berrien County, MI - (Serious)
Calhoun County
8-Hour Ozone (1997)				Kalamazoo-Battle Creek, MI - (Former Subpart 1)
Cass County
8-Hour Ozone (1997)				Cass County, MI - (Marginal)
Clinton County
8-Hour Ozone (1997)				Lansing-East Lansing, MI - (Former Subpart 1)
Eaton County
8-Hour Ozone (1997)				Lansing-East Lansing, MI - (Former Subpart 1)
Genesee County
8-Hour Ozone (1997)				Flint, MI - (Former Subpart 1)
1-Hour Ozone (1979)				Flint, MI - (Section 185A)
Huron County
8-Hour Ozone (1997)				Huron County, MI - (Former Subpart 1)
Ingham County
8-Hour Ozone (1997)				Lansing-East Lansing, MI - (Former Subpart 1)
Kalamazoo County
8-Hour Ozone (1997)				Kalamazoo-Battle Creek, MI - (Former Subpart 1)
Kent County
8-Hour Ozone (1997)				Grand Rapids, MI - (Former Subpart 1)
1-Hour Ozone (1979)				Grand Rapids, MI - (Moderate)
Lapeer County
8-Hour Ozone (1997)				Flint, MI - (Former Subpart 1)
Lenawee County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
Livingston County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Macomb County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Mason County
8-Hour Ozone (1997)				Mason County, MI - (Former Subpart 1)
Midland County
1-Hour Ozone (1979)				Saginaw-Bay City-Midland, MI - (Incomplete Data)
Monroe County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Muskegon County
8-Hour Ozone (1997)				Muskegon, MI - (Marginal)
1-Hour Ozone (1979)				Muskegon, MI - (Moderate)
8-Hour Ozone (2015)			*	Muskegon County, MI - (Serious)
Oakland County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Ottawa County
8-Hour Ozone (1997)				Grand Rapids, MI - (Former Subpart 1)
1-Hour Ozone (1979)				Grand Rapids, MI - (Moderate)
Saginaw County
1-Hour Ozone (1979)				Saginaw-Bay City-Midland, MI - (Incomplete Data)
St. Clair County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Van Buren County
8-Hour Ozone (1997)				Kalamazoo-Battle Creek, MI - (Former Subpart 1)
Washtenaw County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
Wayne County
8-Hour Ozone (1997)				Detroit-Ann Arbor, MI - (Marginal)
1-Hour Ozone (1979)				Detroit-Ann Arbor, MI - (Moderate)
8-Hour Ozone (2015)				Detroit, MI - (Moderate)
MISSISSIPPI
DeSoto County
8-Hour Ozone (2008)			*	Memphis, TN-MS-AR - (Marginal)
MISSOURI
Clay County
1-Hour Ozone (1979)				Kansas City, MO-KS - (Other)
Franklin County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)			*	St. Louis, MO-IL - (Serious)
Jackson County
1-Hour Ozone (1979)				Kansas City, MO-KS - (Other)
Jefferson County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
Platte County
1-Hour Ozone (1979)				Kansas City, MO-KS - (Other)
St. Charles County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
St. Louis County
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
St. Louis city
8-Hour Ozone (1997)				St. Louis, MO-IL - (Moderate)
1-Hour Ozone (1979)				St. Louis, MO-IL - (Serious)
8-Hour Ozone (2008)				St. Louis-St. Charles-Farmington, MO-IL - (Marginal)
8-Hour Ozone (2015)				St. Louis, MO-IL - (Serious)
NEVADA
Clark County
8-Hour Ozone (1997)			*	Las Vegas, NV - (Marginal)
8-Hour Ozone (2015)			*	Las Vegas, NV - (Serious)
Washoe County
1-Hour Ozone (1979)				Reno, NV - (Marginal)
NEW HAMPSHIRE
Cheshire County
1-Hour Ozone (1979)				Cheshire County, NH - (Incomplete Data)
Hillsborough County
8-Hour Ozone (1997)			*	Boston-Manchester-Portsmouth (SE), NH - (Moderate)
1-Hour Ozone (1979)			*	Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
1-Hour Ozone (1979)			*	Manchester, NH - (Marginal)
Merrimack County
8-Hour Ozone (1997)			*	Boston-Manchester-Portsmouth (SE), NH - (Moderate)
1-Hour Ozone (1979)				Manchester, NH - (Marginal)
Rockingham County
8-Hour Ozone (1997)			*	Boston-Manchester-Portsmouth (SE), NH - (Moderate)
1-Hour Ozone (1979)			*	Boston-Lawrence-Worcester (E. Mass), MA-NH - (Serious)
1-Hour Ozone (1979)			*	Manchester, NH - (Marginal)
1-Hour Ozone (1979)			*	Portsmouth-Dover-Rochester, NH - (Serious)
Strafford County
8-Hour Ozone (1997)			*	Boston-Manchester-Portsmouth (SE), NH - (Moderate)
1-Hour Ozone (1979)				Portsmouth-Dover-Rochester, NH - (Serious)
NEW JERSEY
Atlantic County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Atlantic City, NJ - (Moderate)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Bergen County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Burlington County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Camden County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Cape May County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Atlantic City, NJ - (Moderate)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Cumberland County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Essex County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Gloucester County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Hudson County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Hunterdon County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Mercer County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Middlesex County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Monmouth County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Morris County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Ocean County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Passaic County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Salem County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Somerset County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Sussex County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Union County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Warren County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				Allentown-Bethlehem-Easton, PA-NJ - (Marginal)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
NEW MEXICO
Dona Ana County
1-Hour Ozone (1979)			*	Dona Ana County (part); Sunland Park, NM - (Marginal)
8-Hour Ozone (2015)			*	El Paso-Las Cruces, TX-NM - (Marginal)
NEW YORK
Albany County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Bronx County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Chautauqua County
8-Hour Ozone (1997)				Jamestown, NY - (Moderate)
8-Hour Ozone (2008)				Jamestown, NY - (Marginal)
Dutchess County
8-Hour Ozone (1997)				Poughkeepsie, NY - (Moderate)
1-Hour Ozone (1979)				Poughkeepsie, NY - (Moderate)
Erie County
8-Hour Ozone (1997)				Buffalo-Niagara Falls, NY - (Moderate)
1-Hour Ozone (1979)				Buffalo-Niagara Falls, NY - (Marginal)
Essex County
8-Hour Ozone (1997)			*	Essex County (Whiteface Mtn.), NY - (Marginal)
1-Hour Ozone (1979)			*	Essex County; Whiteface Mountain, NY - (Rural Transport (Marginal))
Genesee County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Greene County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Jefferson County
8-Hour Ozone (1997)				Jefferson County, NY - (Moderate)
1-Hour Ozone (1979)				Jefferson County, NY - (Marginal)
Kings County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Livingston County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Monroe County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Montgomery County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Nassau County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
New York County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Niagara County
8-Hour Ozone (1997)				Buffalo-Niagara Falls, NY - (Moderate)
1-Hour Ozone (1979)				Buffalo-Niagara Falls, NY - (Marginal)
Ontario County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Orange County
8-Hour Ozone (1997)				Poughkeepsie, NY - (Moderate)
1-Hour Ozone (1979)			*	New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
1-Hour Ozone (1979)			*	Poughkeepsie, NY - (Moderate)
Orleans County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Putnam County
8-Hour Ozone (1997)				Poughkeepsie, NY - (Moderate)
1-Hour Ozone (1979)				Poughkeepsie, NY - (Moderate)
Queens County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Rensselaer County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Richmond County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Rockland County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Saratoga County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Schenectady County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
1-Hour Ozone (1979)				Albany-Schenectady-Troy, NY - (Marginal)
Schoharie County
8-Hour Ozone (1997)				Albany-Schenectady-Troy, NY - (Marginal)
Suffolk County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
Wayne County
8-Hour Ozone (1997)				Rochester, NY - (Marginal)
Westchester County
8-Hour Ozone (1997)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Moderate)
1-Hour Ozone (1979)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe-17)
8-Hour Ozone (2008)				New York-N. New Jersey-Long Island, NY-NJ-CT - (Severe 15)
8-Hour Ozone (2015)				New York-Northern New Jersey-Long Island, NY-NJ-CT - (Serious)
NORTH CAROLINA
Cabarrus County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Chatham County
8-Hour Ozone (1997)			*	Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
Davidson County
1-Hour Ozone (1979)				Greensboro-Winston-Salem-High Point, NC - (Moderate)
Davie County
1-Hour Ozone (1979)			*	Greensboro-Winston-Salem-High Point, NC - (Moderate)
Durham County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
1-Hour Ozone (1979)				Raleigh-Durham, NC - (Moderate)
Edgecombe County
8-Hour Ozone (1997)				Rocky Mount, NC - (Former Subpart 1)
Forsyth County
1-Hour Ozone (1979)				Greensboro-Winston-Salem-High Point, NC - (Moderate)
Franklin County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
Gaston County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
1-Hour Ozone (1979)				Charlotte-Gastonia, NC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Granville County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
1-Hour Ozone (1979)			*	Raleigh-Durham, NC - (Moderate)
Guilford County
1-Hour Ozone (1979)				Greensboro-Winston-Salem-High Point, NC - (Moderate)
Haywood County
8-Hour Ozone (1997)			*	Haywood and Swain Counties (Great Smoky NP), NC - (Former Subpart 1)
Iredell County
8-Hour Ozone (1997)			*	Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Johnston County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
Lincoln County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Mecklenburg County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
1-Hour Ozone (1979)				Charlotte-Gastonia, NC - (Moderate)
8-Hour Ozone (2008)				Charlotte-Rock Hill, NC-SC - (Marginal)
Nash County
8-Hour Ozone (1997)				Rocky Mount, NC - (Former Subpart 1)
Orange County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
Person County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
Rowan County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Swain County
8-Hour Ozone (1997)			*	Haywood and Swain Counties (Great Smoky NP), NC - (Former Subpart 1)
Union County
8-Hour Ozone (1997)				Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
Wake County
8-Hour Ozone (1997)				Raleigh-Durham-Chapel Hill, NC - (Former Subpart 1)
1-Hour Ozone (1979)				Raleigh-Durham, NC - (Moderate)
OHIO
Allen County
8-Hour Ozone (1997)				Lima, OH - (Former Subpart 1)
Ashtabula County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
Belmont County
8-Hour Ozone (1997)				Wheeling, WV-OH - (Former Subpart 1)
Butler County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)				Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)				Cincinnati, OH-KY - (Marginal)
Clark County
8-Hour Ozone (1997)				Dayton-Springfield, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Dayton-Springfield, OH - (Moderate)
Clermont County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)				Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)				Cincinnati, OH-KY - (Marginal)
Clinton County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Clinton County, OH - (Section 185A)
8-Hour Ozone (2008)				Cincinnati, OH-KY-IN - (Marginal)
Columbiana County
8-Hour Ozone (1997)				Youngstown-Warren-Sharon, OH-PA - (Former Subpart 1)
1-Hour Ozone (1979)				Columbiana County, OH - (Incomplete Data)
Cuyahoga County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Delaware County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Columbus, OH - (Marginal)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
8-Hour Ozone (2015)				Columbus, OH - (Marginal)
Fairfield County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
8-Hour Ozone (2015)				Columbus, OH - (Marginal)
Franklin County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Columbus, OH - (Marginal)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
8-Hour Ozone (2015)				Columbus, OH - (Marginal)
Geauga County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Greene County
8-Hour Ozone (1997)				Dayton-Springfield, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Dayton-Springfield, OH - (Moderate)
Hamilton County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)				Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)				Cincinnati, OH-KY - (Marginal)
Jefferson County
8-Hour Ozone (1997)				Steubenville-Weirton, OH-WV - (Former Subpart 1)
1-Hour Ozone (1979)				Steubenville, OH - (Section 185A)
Knox County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
Lake County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Licking County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Columbus, OH - (Marginal)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
8-Hour Ozone (2015)				Columbus, OH - (Marginal)
Lorain County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Lucas County
8-Hour Ozone (1997)				Toledo, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Toledo, OH - (Moderate)
Madison County
8-Hour Ozone (1997)				Columbus, OH - (Former Subpart 1)
8-Hour Ozone (2008)				Columbus, OH - (Marginal)
Mahoning County
8-Hour Ozone (1997)				Youngstown-Warren-Sharon, OH-PA - (Former Subpart 1)
1-Hour Ozone (1979)				Youngstown-Warren-Sharon, OH-PA (OH portion) - (Marginal)
Medina County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Miami County
8-Hour Ozone (1997)				Dayton-Springfield, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Dayton-Springfield, OH - (Moderate)
Montgomery County
8-Hour Ozone (1997)				Dayton-Springfield, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Dayton-Springfield, OH - (Moderate)
Portage County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Preble County
1-Hour Ozone (1979)				Preble County, OH - (Section 185A)
Stark County
8-Hour Ozone (1997)				Canton-Massillon, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Canton, OH - (Marginal)
Summit County
8-Hour Ozone (1997)				Cleveland-Akron-Lorain, OH - (Moderate)
1-Hour Ozone (1979)				Cleveland-Akron-Lorain, OH - (Moderate)
8-Hour Ozone (2008)				Cleveland-Akron-Lorain, OH - (Marginal)
8-Hour Ozone (2015)				Cleveland, OH - (Serious)
Trumbull County
8-Hour Ozone (1997)				Youngstown-Warren-Sharon, OH-PA - (Former Subpart 1)
1-Hour Ozone (1979)				Youngstown-Warren-Sharon, OH-PA (OH portion) - (Marginal)
Warren County
8-Hour Ozone (1997)				Cincinnati-Hamilton, OH-KY-IN - (Former Subpart 1)
1-Hour Ozone (1979)				Cincinnati-Hamilton, OH-KY - (Moderate)
8-Hour Ozone (2008)				Cincinnati, OH-KY-IN - (Marginal)
8-Hour Ozone (2015)				Cincinnati, OH-KY - (Marginal)
Washington County
8-Hour Ozone (1997)				Parkersburg-Marietta, WV-OH - (Former Subpart 1)
Wood County
8-Hour Ozone (1997)				Toledo, OH - (Former Subpart 1)
1-Hour Ozone (1979)				Toledo, OH - (Moderate)
OREGON
Clackamas County
1-Hour Ozone (1979)			*	Portland-Vancouver AQMA, OR-WA - (Marginal)
Marion County
1-Hour Ozone (1979)			*	Salem, OR - (Incomplete Data)
Multnomah County
1-Hour Ozone (1979)			*	Portland-Vancouver AQMA, OR-WA - (Marginal)
Polk County
1-Hour Ozone (1979)			*	Salem, OR - (Incomplete Data)
Washington County
1-Hour Ozone (1979)			*	Portland-Vancouver AQMA, OR-WA - (Marginal)
PENNSYLVANIA
Adams County
8-Hour Ozone (1997)				York, PA - (Former Subpart 1)
1-Hour Ozone (1979)				York, PA - (Marginal)
Allegheny County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Armstrong County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Beaver County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Berks County
8-Hour Ozone (1997)				Reading, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Reading, PA - (Moderate)
8-Hour Ozone (2008)				Reading, PA - (Marginal)
Blair County
8-Hour Ozone (1997)				Altoona, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Altoona, PA - (Marginal)
Bucks County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Butler County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Cambria County
8-Hour Ozone (1997)				Johnstown, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Johnstown, PA - (Marginal)
Carbon County
8-Hour Ozone (1997)				Allentown-Bethlehem-Easton, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Allentown-Bethlehem-Easton, PA-NJ - (Marginal)
8-Hour Ozone (2008)				Allentown-Bethlehem-Easton, PA - (Marginal)
Centre County
8-Hour Ozone (1997)				State College, PA - (Former Subpart 1)
Chester County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Clearfield County
8-Hour Ozone (1997)				Clearfield and Indiana Counties, PA - (Former Subpart 1)
Columbia County
1-Hour Ozone (1979)				Scranton-Wilkes-Barre, PA - (Marginal)
Crawford County
1-Hour Ozone (1979)				Crawford County, PA - (Incomplete Data)
Cumberland County
8-Hour Ozone (1997)				Harrisburg-Lebanon-Carlisle, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Harrisburg-Lebanon-Carlisle, PA - (Marginal)
Dauphin County
8-Hour Ozone (1997)				Harrisburg-Lebanon-Carlisle, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Harrisburg-Lebanon-Carlisle, PA - (Marginal)
Delaware County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Erie County
8-Hour Ozone (1997)				Erie, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Erie, PA - (Marginal)
Fayette County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Franklin County
8-Hour Ozone (1997)				Franklin County, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Franklin County, PA - (Incomplete Data)
Greene County
8-Hour Ozone (1997)				Greene County, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Greene County, PA - (Incomplete Data)
Indiana County
8-Hour Ozone (1997)				Clearfield and Indiana Counties, PA - (Former Subpart 1)
Juniata County
1-Hour Ozone (1979)				Juniata County, PA - (Incomplete Data)
Lackawanna County
8-Hour Ozone (1997)				Scranton-Wilkes-Barre, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Scranton-Wilkes-Barre, PA - (Marginal)
Lancaster County
8-Hour Ozone (1997)				Lancaster, PA - (Marginal)
1-Hour Ozone (1979)				Lancaster, PA - (Marginal)
8-Hour Ozone (2008)				Lancaster, PA - (Marginal)
Lawrence County
1-Hour Ozone (1979)				Lawrence County, PA - (Incomplete Data)
Lebanon County
8-Hour Ozone (1997)				Harrisburg-Lebanon-Carlisle, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Harrisburg-Lebanon-Carlisle, PA - (Marginal)
Lehigh County
8-Hour Ozone (1997)				Allentown-Bethlehem-Easton, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Allentown-Bethlehem-Easton, PA-NJ - (Marginal)
8-Hour Ozone (2008)				Allentown-Bethlehem-Easton, PA - (Marginal)
Luzerne County
8-Hour Ozone (1997)				Scranton-Wilkes-Barre, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Scranton-Wilkes-Barre, PA - (Marginal)
Mercer County
8-Hour Ozone (1997)				Youngstown-Warren-Sharon, OH-PA - (Former Subpart 1)
1-Hour Ozone (1979)				Youngstown-Warren-Sharon, OH-PA (PA portion) - (Marginal)
Monroe County
8-Hour Ozone (1997)				Scranton-Wilkes-Barre, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Scranton-Wilkes-Barre, PA - (Marginal)
Montgomery County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Northampton County
8-Hour Ozone (1997)				Allentown-Bethlehem-Easton, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Allentown-Bethlehem-Easton, PA-NJ - (Marginal)
8-Hour Ozone (2008)				Allentown-Bethlehem-Easton, PA - (Marginal)
Northumberland County
1-Hour Ozone (1979)				Northumberland County, PA - (Incomplete Data)
Perry County
8-Hour Ozone (1997)				Harrisburg-Lebanon-Carlisle, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Harrisburg-Lebanon-Carlisle, PA - (Marginal)
Philadelphia County
8-Hour Ozone (1997)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Moderate)
1-Hour Ozone (1979)				Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD - (Severe-15)
8-Hour Ozone (2008)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Marginal)
8-Hour Ozone (2015)				Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE - (Serious)
Pike County
1-Hour Ozone (1979)				Pike County, PA - (Incomplete Data)
Schuylkill County
1-Hour Ozone (1979)				Schuylkill County, PA - (Incomplete Data)
Snyder County
1-Hour Ozone (1979)				Snyder County, PA - (Incomplete Data)
Somerset County
1-Hour Ozone (1979)				Johnstown, PA - (Marginal)
Susquehanna County
1-Hour Ozone (1979)				Susquehanna County, PA - (Incomplete Data)
Tioga County
8-Hour Ozone (1997)				Tioga County, PA - (Former Subpart 1)
Warren County
1-Hour Ozone (1979)				Warren County, PA - (Incomplete Data)
Washington County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Wayne County
1-Hour Ozone (1979)				Wayne County, PA - (Incomplete Data)
Westmoreland County
8-Hour Ozone (1997)				Pittsburgh-Beaver Valley, PA - (Moderate)
1-Hour Ozone (1979)				Pittsburgh-Beaver Valley, PA - (Moderate)
8-Hour Ozone (2008)				Pittsburgh-Beaver Valley, PA - (Marginal)
Wyoming County
8-Hour Ozone (1997)				Scranton-Wilkes-Barre, PA - (Former Subpart 1)
1-Hour Ozone (1979)				Scranton-Wilkes-Barre, PA - (Marginal)
York County
8-Hour Ozone (1997)				York, PA - (Former Subpart 1)
1-Hour Ozone (1979)				York, PA - (Marginal)
RHODE ISLAND
Bristol County
8-Hour Ozone (1997)				Providence (all of RI), RI - (Moderate)
1-Hour Ozone (1979)				Providence (all of RI), RI - (Serious)
Kent County
8-Hour Ozone (1997)				Providence (all of RI), RI - (Moderate)
1-Hour Ozone (1979)				Providence (all of RI), RI - (Serious)
Newport County
8-Hour Ozone (1997)				Providence (all of RI), RI - (Moderate)
1-Hour Ozone (1979)				Providence (all of RI), RI - (Serious)
Providence County
8-Hour Ozone (1997)				Providence (all of RI), RI - (Moderate)
1-Hour Ozone (1979)				Providence (all of RI), RI - (Serious)
Washington County
8-Hour Ozone (1997)				Providence (all of RI), RI - (Moderate)
1-Hour Ozone (1979)				Providence (all of RI), RI - (Serious)
SOUTH CAROLINA
Cherokee County
1-Hour Ozone (1979)				Cherokee County, SC - (Marginal)
York County
8-Hour Ozone (1997)			*	Charlotte-Gastonia-Rock Hill, NC-SC - (Moderate)
8-Hour Ozone (2008)			*	Charlotte-Rock Hill, NC-SC - (Marginal)
TENNESSEE
Anderson County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
8-Hour Ozone (2008)			*	Knoxville, TN - (Marginal)
Blount County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
8-Hour Ozone (2008)				Knoxville, TN - (Marginal)
Cocke County
8-Hour Ozone (1997)			*	Knoxville, TN - (Former Subpart 1)
Davidson County
1-Hour Ozone (1979)				Nashville, TN - (Moderate)
Jefferson County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
Knox County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
1-Hour Ozone (1979)				Knoxville, TN - (Marginal)
8-Hour Ozone (2008)				Knoxville, TN - (Marginal)
Loudon County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
Montgomery County
8-Hour Ozone (1997)				Clarksville-Hopkinsville, TN-KY - (Former Subpart 1)
Rutherford County
1-Hour Ozone (1979)				Nashville, TN - (Moderate)
Sevier County
8-Hour Ozone (1997)				Knoxville, TN - (Former Subpart 1)
Shelby County
8-Hour Ozone (1997)				Memphis, TN-AR - (Moderate)
1-Hour Ozone (1979)				Memphis, TN - (Marginal)
8-Hour Ozone (2008)				Memphis, TN-MS-AR - (Marginal)
Sumner County
1-Hour Ozone (1979)				Nashville, TN - (Moderate)
Williamson County
1-Hour Ozone (1979)				Nashville, TN - (Moderate)
Wilson County
1-Hour Ozone (1979)				Nashville, TN - (Moderate)
TEXAS
Bexar County
8-Hour Ozone (2015)				San Antonio, TX - (Serious)
Brazoria County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Chambers County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Collin County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
1-Hour Ozone (1979)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Dallas County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
1-Hour Ozone (1979)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Denton County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
1-Hour Ozone (1979)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
El Paso County
1-Hour Ozone (1979)				El Paso, TX - (Serious)
8-Hour Ozone (2015)				El Paso-Las Cruces, TX-NM - (Marginal)
Ellis County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Fort Bend County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Galveston County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Hardin County
8-Hour Ozone (1997)				Beaumont-Port Arthur, TX - (Moderate)
1-Hour Ozone (1979)				Beaumont-Port Arthur, TX - (Serious)
Harris County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Jefferson County
8-Hour Ozone (1997)				Beaumont-Port Arthur, TX - (Moderate)
1-Hour Ozone (1979)				Beaumont-Port Arthur, TX - (Serious)
Johnson County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Kaufman County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Liberty County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
Montgomery County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
8-Hour Ozone (2015)				Houston-Galveston-Brazoria, TX - (Serious)
Orange County
8-Hour Ozone (1997)				Beaumont-Port Arthur, TX - (Moderate)
1-Hour Ozone (1979)				Beaumont-Port Arthur, TX - (Serious)
Parker County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Rockwall County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
Tarrant County
8-Hour Ozone (1997)				Dallas-Fort Worth, TX - (Serious)
1-Hour Ozone (1979)				Dallas-Fort Worth, TX - (Serious)
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
Victoria County
1-Hour Ozone (1979)				Victoria, TX - (Incomplete Data)
Waller County
8-Hour Ozone (1997)				Houston-Galveston-Brazoria, TX - (Severe 15)
1-Hour Ozone (1979)				Houston-Galveston-Brazoria, TX - (Severe-17)
8-Hour Ozone (2008)				Houston-Galveston-Brazoria, TX - (Severe 15)
Wise County
8-Hour Ozone (2008)				Dallas-Fort Worth, TX - (Severe 15)
8-Hour Ozone (2015)				Dallas-Fort Worth, TX - (Serious)
UTAH
Davis County
1-Hour Ozone (1979)				Salt Lake City, UT - (Moderate)
8-Hour Ozone (2015)				Northern Wasatch Front, UT - (Serious)
Duchesne County
8-Hour Ozone (2015)			*	Uinta Basin, UT - (Moderate)
Salt Lake County
1-Hour Ozone (1979)				Salt Lake City, UT - (Moderate)
8-Hour Ozone (2015)				Northern Wasatch Front, UT - (Serious)
Tooele County
8-Hour Ozone (2015)			*	Northern Wasatch Front, UT - (Serious)
Uintah County
8-Hour Ozone (2015)			*	Uinta Basin, UT - (Moderate)
Utah County
8-Hour Ozone (2015)			*	Southern Wasatch Front, UT - (Marginal)
Weber County
8-Hour Ozone (2015)			*	Northern Wasatch Front, UT - (Serious)
VIRGINIA
Alexandria city
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Arlington County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Charles City County
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)			*	Richmond, VA - (Moderate)
Chesapeake city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Chesterfield County
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Colonial Heights city
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Fairfax County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Fairfax city
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Falls Church city
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Fredericksburg city
8-Hour Ozone (1997)				Fredericksburg, VA - (Moderate)
Gloucester County
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Hampton city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Hanover County
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Henrico County
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Hopewell city
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Isle of Wight County
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
James City County
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Loudoun County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Madison County
8-Hour Ozone (1997)			*	Madison and Page Counties (Shenandoah NP), VA - (Former Subpart 1)
Manassas Park city
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Manassas city
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Newport News city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Norfolk city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Page County
8-Hour Ozone (1997)			*	Madison and Page Counties (Shenandoah NP), VA - (Former Subpart 1)
Petersburg city
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
Poquoson city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Portsmouth city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Prince George County
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
Prince William County
8-Hour Ozone (1997)				Washington, DC-MD-VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
8-Hour Ozone (2008)				Washington, DC-MD-VA - (Marginal)
8-Hour Ozone (2015)				Washington, DC-MD-VA - (Moderate)
Richmond city
8-Hour Ozone (1997)				Richmond-Petersburg, VA - (Marginal)
1-Hour Ozone (1979)				Richmond, VA - (Moderate)
Smyth County
1-Hour Ozone (1979)			*	Smyth County; White Top Mountain, VA - (Rural Transport (Marginal))
Spotsylvania County
8-Hour Ozone (1997)				Fredericksburg, VA - (Moderate)
Stafford County
8-Hour Ozone (1997)				Fredericksburg, VA - (Moderate)
1-Hour Ozone (1979)				Washington, DC-MD-VA - (Severe-15)
Suffolk city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Virginia Beach city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
Williamsburg city
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
York County
8-Hour Ozone (1997)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
1-Hour Ozone (1979)				Norfolk-Virginia Beach-Newport News (Hampton Roads), VA - (Marginal)
WASHINGTON
Clark County
1-Hour Ozone (1979)			*	Portland-Vancouver AQMA, OR-WA - (Marginal)
King County
1-Hour Ozone (1979)			*	Seattle-Tacoma, WA - (Marginal)
Pierce County
1-Hour Ozone (1979)				Seattle-Tacoma, WA - (Marginal)
Snohomish County
1-Hour Ozone (1979)			*	Seattle-Tacoma, WA - (Marginal)
WEST VIRGINIA
Brooke County
8-Hour Ozone (1997)				Steubenville-Weirton, OH-WV - (Former Subpart 1)
Cabell County
8-Hour Ozone (1997)				Huntington-Ashland, WV-KY - (Former Subpart 1)
1-Hour Ozone (1979)				Huntington-Ashland, WV-KY - (Moderate)
Greenbrier County
1-Hour Ozone (1979)				Greenbrier, WV - (Marginal)
Hancock County
8-Hour Ozone (1997)				Steubenville-Weirton, OH-WV - (Former Subpart 1)
Kanawha County
8-Hour Ozone (1997)				Charleston, WV - (Former Subpart 1)
1-Hour Ozone (1979)				Charleston, WV - (Moderate)
Marshall County
8-Hour Ozone (1997)				Wheeling, WV-OH - (Former Subpart 1)
Ohio County
8-Hour Ozone (1997)				Wheeling, WV-OH - (Former Subpart 1)
Putnam County
8-Hour Ozone (1997)				Charleston, WV - (Former Subpart 1)
1-Hour Ozone (1979)				Charleston, WV - (Moderate)
Wayne County
8-Hour Ozone (1997)				Huntington-Ashland, WV-KY - (Former Subpart 1)
1-Hour Ozone (1979)				Huntington-Ashland, WV-KY - (Moderate)
Wood County
8-Hour Ozone (1997)				Parkersburg-Marietta, WV-OH - (Former Subpart 1)
1-Hour Ozone (1979)				Parkersburg-Marietta, WV - (Moderate)
WISCONSIN
Door County
8-Hour Ozone (1997)				Door County, WI - (Former Subpart 1)
1-Hour Ozone (1979)				Door County, WI - (Rural Transport (Marginal))
8-Hour Ozone (2015)			*	Door County, WI - (Marginal (Rural Transport))
8-Hour Ozone (2015)			*	Door County-Revised, WI - (Marginal (Rural Transport))
Kenosha County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2008)			*	Chicago-Naperville, IL-IN-WI - (Serious)
8-Hour Ozone (2015)			*	Chicago, IL-IN-WI - (Serious)
Kewaunee County
8-Hour Ozone (1997)				Kewaunee County, WI - (Former Subpart 1)
1-Hour Ozone (1979)				Kewaunee County, WI - (Moderate)
Manitowoc County
8-Hour Ozone (1997)				Manitowoc County, WI - (Former Subpart 1)
1-Hour Ozone (1979)				Manitowoc County, WI - (Moderate)
8-Hour Ozone (2015)			*	Manitowoc County, WI - (Marginal)
Milwaukee County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2015)				Milwaukee, WI - (Serious)
Ozaukee County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2015)				Milwaukee, WI - (Serious)
Racine County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2015)			*	Milwaukee, WI - (Serious)
Sheboygan County
8-Hour Ozone (1997)			*	Inland Sheboygan County, WI - (Moderate)
8-Hour Ozone (1997)			*	Shoreline Sheboygan County, WI - (Moderate)
1-Hour Ozone (1979)				Sheboygan, WI - (Moderate)
8-Hour Ozone (2008)			*	Inland Sheboygan County, WI - (Moderate)
8-Hour Ozone (2008)			*	Shoreline Sheboygan County, WI - (Moderate)
8-Hour Ozone (2015)			*	Sheboygan County, WI - (Serious)
Walworth County
1-Hour Ozone (1979)				Walworth County, WI - (Marginal)
Washington County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2015)			*	Milwaukee, WI - (Serious)
Waukesha County
8-Hour Ozone (1997)				Milwaukee-Racine, WI - (Moderate)
1-Hour Ozone (1979)				Milwaukee-Racine, WI - (Severe-17)
8-Hour Ozone (2015)			*	Milwaukee, WI - (Serious)
WYOMING
Lincoln County
8-Hour Ozone (2008)			*	Upper Green River Basin Area, WY - (Marginal)
Sublette County
8-Hour Ozone (2008)				Upper Green River Basin Area, WY - (Marginal)
Sweetwater County
8-Hour Ozone (2008)			*	Upper Green River Basin Area, WY - (Marginal)

Go Top