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8-Hour Ozone (2008) Designated Area State/Area/County Report
8-Hour Ozone (2008) Designated Area State/Area/County Report
Data is current as of April 30, 2024| ARIZONA (Region IX) | |
| Phoenix-Mesa, AZ (Moderate - Nonattainment) | |
| Maricopa County (P) | |
| Pinal County (P) | |
| ARKANSAS (Region VI) | |
| Memphis, TN-MS-AR (Marginal - Maintenance) | |
| Crittenden County | |
| CALIFORNIA (Region IX) | |
| Calaveras County, CA (Marginal - Nonattainment) | |
| Calaveras County | |
| Chico (Butte County), CA (Marginal - Nonattainment) | |
| Butte County | |
| Imperial County, CA (Moderate - Nonattainment) | |
| Imperial County | |
| Kern County (Eastern Kern), CA (Severe 15 - Nonattainment) | |
| Kern County (P) | |
| Los Angeles-San Bernardino Counties (West Mojave Desert), CA (Severe 15 - Nonattainment) | |
| Los Angeles County (P) | |
| San Bernardino County (P) | |
| Los Angeles-South Coast Air Basin, CA (Extreme - Nonattainment) | |
| Los Angeles County (P) | |
| Orange County | |
| Riverside County (P) | |
| San Bernardino County (P) | |
| Mariposa County, CA (Moderate - Nonattainment) | |
| Mariposa County | |
| Morongo Band of Mission Indians, CA (Severe 15 - Nonattainment) | |
| Riverside County (P) | |
| Nevada County (Western part), CA (Serious - Nonattainment) | |
| Nevada County (P) | |
| Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA (Moderate - Nonattainment) | |
| Riverside County (P) | |
| San Diego County (P) | |
| Riverside County (Coachella Valley), CA (Extreme - Nonattainment) | |
| Riverside County (P) | |
| Sacramento Metro, CA (Severe 15 - Nonattainment) | |
| El Dorado County (P) | |
| Placer County (P) | |
| Sacramento County | |
| Solano County (P) | |
| Sutter County (P) | |
| Yolo County | |
| San Diego County, CA (Severe 15 - Nonattainment) | |
| San Diego County (P) | |
| San Francisco Bay Area, CA (Marginal - Nonattainment) | |
| Alameda County | |
| Contra Costa County | |
| Marin County | |
| Napa County | |
| San Francisco County | |
| San Mateo County | |
| Santa Clara County | |
| Solano County (P) | |
| Sonoma County (P) | |
| San Joaquin Valley, CA (Extreme - Nonattainment) | |
| Fresno County | |
| Kern County (P) | |
| Kings County | |
| Madera County | |
| Merced County | |
| San Joaquin County | |
| Stanislaus County | |
| Tulare County | |
| San Luis Obispo (Eastern San Luis Obispo), CA (Marginal - Nonattainment) | |
| San Luis Obispo County (P) | |
| Tuscan Buttes, CA (Marginal - Nonattainment) | |
| Tehama County (P) | |
| Ventura County, CA (Serious - Nonattainment) | |
| Ventura County (P) | |
| COLORADO (Region VIII) | |
| Denver-Boulder-Greeley-Ft. Collins-Loveland, CO (Severe 15 - Nonattainment) | |
| Adams County | |
| Arapahoe County | |
| Boulder County | |
| Broomfield County | |
| Denver County | |
| Douglas County | |
| Jefferson County | |
| Larimer County (P) | |
| Weld County (P) | |
| CONNECTICUT (Region I) | |
| Greater Connecticut, CT (Serious - Nonattainment) | |
| Hartford County | |
| Litchfield County | |
| New London County | |
| Tolland County | |
| Windham County | |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Severe 15 - Nonattainment) | |
| Fairfield County | |
| Middlesex County | |
| New Haven County | |
| DELAWARE (Region III) | |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (Marginal - Nonattainment) | |
| New Castle County | |
| Seaford, DE (Marginal - Nonattainment) | |
| Sussex County | |
| DISTRICT OF COLUMBIA (Region III) | |
| Washington, DC-MD-VA (Marginal - Maintenance) | |
| District of Columbia | |
| GEORGIA (Region IV) | |
| Atlanta, GA (Moderate - Maintenance) | |
| Bartow County | |
| Cherokee County | |
| Clayton County | |
| Cobb County | |
| Coweta County | |
| DeKalb County | |
| Douglas County | |
| Fayette County | |
| Forsyth County | |
| Fulton County | |
| Gwinnett County | |
| Henry County | |
| Newton County | |
| Paulding County | |
| Rockdale County | |
| ILLINOIS (Region V) | |
| Chicago-Naperville, IL-IN-WI (Serious - Maintenance) | |
| Cook County | |
| DuPage County | |
| Grundy County (P) | |
| Kane County | |
| Kendall County (P) | |
| Lake County | |
| McHenry County | |
| Will County | |
| St. Louis-St. Charles-Farmington, MO-IL (Marginal - Maintenance) | |
| Madison County | |
| Monroe County | |
| St. Clair County | |
| INDIANA (Region V) | |
| Chicago-Naperville, IL-IN-WI (Serious - Maintenance) | |
| Lake County | |
| Porter County | |
| Cincinnati, OH-KY-IN (Marginal - Maintenance) | |
| Dearborn County (P) | |
Lawrenceburg Township | |
| KENTUCKY (Region IV) | |
| Cincinnati, OH-KY-IN (Marginal - Maintenance) | |
| Boone County (P) | |
| Campbell County (P) | |
| Kenton County (P) | |
| LOUISIANA (Region VI) | |
| Baton Rouge, LA (Marginal - Maintenance) | |
| Ascension Parish | |
| East Baton Rouge Parish | |
| Iberville Parish | |
| Livingston Parish | |
| West Baton Rouge Parish | |
| MARYLAND (Region III) | |
| Baltimore, MD (Moderate - Nonattainment) | |
| Anne Arundel County | |
| Baltimore County | |
| Baltimore city | |
| Carroll County | |
| Harford County | |
| Howard County | |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (Marginal - Nonattainment) | |
| Cecil County | |
| Washington, DC-MD-VA (Marginal - Maintenance) | |
| Calvert County | |
| Charles County | |
| Frederick County | |
| Montgomery County | |
| Prince George's County | |
| MASSACHUSETTS (Region I) | |
| Dukes County, MA (Marginal - Nonattainment) | |
| Dukes County | |
| MISSISSIPPI (Region IV) | |
| Memphis, TN-MS-AR (Marginal - Maintenance) | |
| DeSoto County (P) | |
Portion along MPO Lines | |
| MISSOURI (Region VII) | |
| St. Louis-St. Charles-Farmington, MO-IL (Marginal - Maintenance) | |
| Franklin County | |
| Jefferson County | |
| St. Charles County | |
| St. Louis County | |
| St. Louis city | |
| NEW JERSEY (Region II) | |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Severe 15 - Nonattainment) | |
| Bergen County | |
| Essex County | |
| Hudson County | |
| Hunterdon County | |
| Middlesex County | |
| Monmouth County | |
| Morris County | |
| Passaic County | |
| Somerset County | |
| Sussex County | |
| Union County | |
| Warren County | |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (Marginal - Nonattainment) | |
| Atlantic County | |
| Burlington County | |
| Camden County | |
| Cape May County | |
| Cumberland County | |
| Gloucester County | |
| Mercer County | |
| Ocean County | |
| Salem County | |
| NEW YORK (Region II) | |
| Jamestown, NY (Marginal - Nonattainment) | |
| Chautauqua County | |
| New York-N. New Jersey-Long Island, NY-NJ-CT (Severe 15 - Nonattainment) | |
| Bronx County | |
| Kings County | |
| Nassau County | |
| New York County | |
| Queens County | |
| Richmond County | |
| Rockland County | |
| Suffolk County | |
| Westchester County | |
| NORTH CAROLINA (Region IV) | |
| Charlotte-Rock Hill, NC-SC (Marginal - Maintenance) | |
| Cabarrus County (P) | |
| Gaston County (P) | |
| Iredell County (P) | |
| Lincoln County (P) | |
| Mecklenburg County | |
| Rowan County (P) | |
| Union County (P) | |
| OHIO (Region V) | |
| Cincinnati, OH-KY-IN (Marginal - Maintenance) | |
| Butler County | |
| Clermont County | |
| Clinton County | |
| Hamilton County | |
| Warren County | |
| Cleveland-Akron-Lorain, OH (Marginal - Maintenance) | |
| Ashtabula County | |
| Cuyahoga County | |
| Geauga County | |
| Lake County | |
| Lorain County | |
| Medina County | |
| Portage County | |
| Summit County | |
| Columbus, OH (Marginal - Maintenance) | |
| Delaware County | |
| Fairfield County | |
| Franklin County | |
| Knox County | |
| Licking County | |
| Madison County | |
| PENNSYLVANIA (Region III) | |
| Allentown-Bethlehem-Easton, PA (Marginal - Nonattainment) | |
| Carbon County | |
| Lehigh County | |
| Northampton County | |
| Lancaster, PA (Marginal - Nonattainment) | |
| Lancaster County | |
| Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE (Marginal - Nonattainment) | |
| Bucks County | |
| Chester County | |
| Delaware County | |
| Montgomery County | |
| Philadelphia County | |
| Pittsburgh-Beaver Valley, PA (Marginal - Nonattainment) | |
| Allegheny County | |
| Armstrong County | |
| Beaver County | |
| Butler County | |
| Fayette County | |
| Washington County | |
| Westmoreland County | |
| Reading, PA (Marginal - Nonattainment) | |
| Berks County | |
| SOUTH CAROLINA (Region IV) | |
| Charlotte-Rock Hill, NC-SC (Marginal - Maintenance) | |
| York County (P) | |
| TENNESSEE (Region IV) | |
| Knoxville, TN (Marginal - Maintenance) | |
| Anderson County (P) | |
| Blount County | |
| Knox County | |
| Memphis, TN-MS-AR (Marginal - Maintenance) | |
| Shelby County | |
| TEXAS (Region VI) | |
| Dallas-Fort Worth, TX (Severe 15 - Nonattainment) | |
| Collin County | |
| Dallas County | |
| Denton County | |
| Ellis County | |
| Johnson County | |
| Kaufman County | |
| Parker County | |
| Rockwall County | |
| Tarrant County | |
| Wise County | |
| Houston-Galveston-Brazoria, TX (Severe 15 - Nonattainment) | |
| Brazoria County | |
| Chambers County | |
| Fort Bend County | |
| Galveston County | |
| Harris County | |
| Liberty County | |
| Montgomery County | |
| Waller County | |
| VIRGINIA (Region III) | |
| Washington, DC-MD-VA (Marginal - Maintenance) | |
| Alexandria city | |
| Arlington County | |
| Fairfax County | |
| Fairfax city | |
| Falls Church city | |
| Loudoun County | |
| Manassas Park city | |
| Manassas city | |
| Prince William County | |
| WISCONSIN (Region V) | |
| Chicago-Naperville, IL-IN-WI (Serious - Maintenance) | |
| Kenosha County (P) | |
| Inland Sheboygan County, WI (Moderate - Maintenance) | |
| Sheboygan County (P) | |
| Shoreline Sheboygan County, WI (Moderate - Maintenance) | |
| Sheboygan County (P) | |
| WYOMING (Region VIII) | |
| Upper Green River Basin Area, WY (Marginal - Nonattainment) | |
| Lincoln County (P) | |
| Sublette County | |
| Sweetwater County (P) | |
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