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Carbon Monoxide (1971) Maintenance Area (Redesignated from Nonattainment) State/Area/County Report
Carbon Monoxide (1971) Maintenance Area (Redesignated from Nonattainment) State/Area/County Report
Data is current as of October 31, 2024ALASKA (Region X) | |
Anchorage, AK (Serious - Maintenance) | |
Anchorage Municipality (P) | |
Portion of Anchorage urban area | |
Fairbanks, AK (Serious - Maintenance) | |
Fairbanks North Star Borough (P) | |
Portion of Fairbanks urban area | |
ARIZONA (Region IX) | |
Phoenix, AZ (Serious - Maintenance) | |
Maricopa County (P) | |
Tucson, AZ (Not Classified - Maintenance) | |
Pima County (P) | |
Portion of Tucson urban area | |
CALIFORNIA (Region IX) | |
Bakersfield, CA (Not Classified - Maintenance) | |
Kern County (P) | |
Chico, CA (Moderate <= 12.7ppm - Maintenance) | |
Butte County (P) | |
Fresno, CA (Moderate > 12.7ppm - Maintenance) | |
Fresno County (P) | |
Fresno Urbanized Area (11/20/85, 50 FR 47735) | |
Lake Tahoe North Shore, CA (Not Classified - Maintenance) | |
Placer County (P) | |
Lake Tahoe South Shore, CA (Moderate <= 12.7ppm - Maintenance) | |
El Dorado County (P) | |
Los Angeles-South Coast Air Basin, CA (Serious - Maintenance) | |
Los Angeles County (P) | |
Orange County | |
Riverside County (P) | |
San Bernardino County (P) | |
Modesto, CA (Moderate <= 12.7ppm - Maintenance) | |
Stanislaus County (P) | |
Sacramento, CA (Moderate <= 12.7ppm - Maintenance) | |
Placer County (P) | |
Sacramento County (P) | |
Yolo County (P) | |
San Diego, CA (Moderate <= 12.7ppm - Maintenance) | |
San Diego County (P) | |
San Francisco-Oakland-San Jose, CA (Moderate <= 12.7ppm - Maintenance) | |
Alameda County (P) | |
Contra Costa County (P) | |
Marin County (P) | |
Napa County (P) | |
San Francisco County | |
San Mateo County (P) | |
Santa Clara County (P) | |
Solano County (P) | |
Sonoma County (P) | |
Stockton, CA (Moderate <= 12.7ppm - Maintenance) | |
San Joaquin County (P) | |
COLORADO (Region VIII) | |
Colorado Springs, CO (Moderate <= 12.7ppm - Maintenance) | |
El Paso County (P) | |
Teller County (P) | |
Denver-Boulder, CO (Serious - Maintenance) | |
Adams County (P) | |
Denver Metro Area | |
Arapahoe County (P) | |
Denver Metro Area | |
Boulder County (P) | |
Denver Metro Area | |
Broomfield County | |
Denver County | |
Douglas County (P) | |
Denver Metro Area | |
Jefferson County (P) | |
Denver Metro Area | |
Fort Collins, CO (Moderate <= 12.7ppm - Maintenance) | |
Larimer County (P) | |
Greeley, CO (Not Classified - Maintenance) | |
Weld County (P) | |
Longmont, CO (Moderate <= 12.7ppm - Maintenance) | |
Boulder County (P) | |
Portion of Longmont | |
Weld County (P) | |
Portion of Longmont | |
CONNECTICUT (Region I) | |
Hartford-New Britain-Middletown, CT (Moderate <= 12.7ppm - Maintenance) | |
Hartford County (P) | |
Litchfield County (P) | |
Plymouth Town | |
Middlesex County (P) | |
Tolland County (P) | |
New Haven-Meriden-Waterbury, CT (Not Classified - Maintenance) | |
Fairfield County (P) | |
Shelton City | |
Litchfield County (P) | |
Bethlehem Town, Thomaston Town, Watertown, Woodbury Town. | |
New Haven County | |
New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm - Maintenance) | |
Fairfield County (P) | |
All cities and townships except Shelton city | |
Litchfield County (P) | |
Bridgewater town, New Milford town | |
DISTRICT OF COLUMBIA (Region III) | |
Washington, DC-MD-VA (Moderate <= 12.7ppm - Maintenance) | |
District of Columbia | |
IDAHO (Region X) | |
Boise-Northern Ada County, ID (Not Classified - Maintenance) | |
Ada County (P) | |
Northern half of Ada Co | |
INDIANA (Region V) | |
East Chicago, IN (Not Classified - Maintenance) | |
Lake County (P) | |
Indianapolis, IN (Not Classified - Maintenance) | |
Marion County (P) | |
MARYLAND (Region III) | |
Baltimore, MD (Moderate <= 12.7ppm - Maintenance) | |
Baltimore city (P) | |
Washington, DC-MD-VA (Moderate <= 12.7ppm - Maintenance) | |
Montgomery County (P) | |
Election Districts 4, 7, 13 | |
Prince George's County (P) | |
Election Districts 2, 6, 12, 16, 17, 18 | |
MASSACHUSETTS (Region I) | |
Boston, MA (Moderate <= 12.7ppm - Maintenance) | |
Middlesex County (P) | |
Cities of: Cambridge, Everett, Malden, Medford, and Somerville. | |
Norfolk County (P) | |
Quincy CIty | |
Suffolk County (P) | |
Cities of: Boston, Chelsea, and Revere | |
Lowell, MA (Not Classified - Maintenance) | |
Middlesex County (P) | |
Lowell City | |
Springfield, MA (Not Classified - Maintenance) | |
Hampden County (P) | |
Springfield City | |
Waltham, MA (Not Classified - Maintenance) | |
Middlesex County (P) | |
Waltham City | |
Worcester, MA (Not Classified - Maintenance) | |
Worcester County (P) | |
City of Worcester | |
MICHIGAN (Region V) | |
Detroit, MI (Not Classified - Maintenance) | |
Macomb County (P) | |
A portion of Detroit | |
Oakland County (P) | |
A portion of Detroit | |
Wayne County (P) | |
A portion of Detroit | |
MINNESOTA (Region V) | |
Duluth, MN (Moderate <= 12.7ppm - Maintenance) | |
St. Louis County (P) | |
City of Duluth | |
Minneapolis-St. Paul, MN (Moderate <= 12.7ppm - Maintenance) | |
Anoka County | |
Carver County (P) | |
Dakota County (P) | |
Hennepin County | |
Ramsey County | |
Scott County (P) | |
Washington County (P) | |
All cities and townships except Denmark Township. | |
Wright County (P) | |
MISSOURI (Region VII) | |
St. Louis, MO (Not Classified - Maintenance) | |
St. Louis County (P) | |
The area encompassed by the I-270 and the Mississippi River. | |
St. Louis city | |
MONTANA (Region VIII) | |
Billings, MT (Not Classified - Maintenance) | |
Yellowstone County (P) | |
Certain ranges and townships | |
Great Falls, MT (Not Classified - Maintenance) | |
Cascade County (P) | |
Missoula, MT (Moderate <= 12.7ppm - Maintenance) | |
Missoula County (P) | |
NEVADA (Region IX) | |
Lake Tahoe, NV (Not Classified - Maintenance) | |
Carson City (P) | |
Hydrographic Area 90 | |
Douglas County (P) | |
Hydrographic Area 90 | |
Washoe County (P) | |
Hydrographic Area 90 | |
Las Vegas, NV (Serious - Maintenance) | |
Clark County (P) | |
Las Vegas Valley Hydrographic Area 212 | |
Reno, NV (Moderate <= 12.7ppm - Maintenance) | |
Washoe County (P) | |
Truckee Meadows Hydrographic Area 87 | |
NEW HAMPSHIRE (Region I) | |
Manchester, NH (Not Classified - Maintenance) | |
Hillsborough County (P) | |
City of Manchester | |
Nashua, NH (Not Classified - Maintenance) | |
Hillsborough County (P) | |
City of Nashua | |
NEW JERSEY (Region II) | |
Atlantic City, NJ (Not Classified - Maintenance) | |
Atlantic County (P) | |
The City of Atlantic City | |
Burlington, NJ (Not Classified - Maintenance) | |
Burlington County (P) | |
City of Burlington | |
Freehold, NJ (Not Classified - Maintenance) | |
Monmouth County (P) | |
Borough of Freehold | |
Morristown, NJ (Not Classified - Maintenance) | |
Morris County (P) | |
City of Morristown | |
New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm - Maintenance) | |
Bergen County | |
Essex County | |
Hudson County | |
Passaic County (P) | |
City of Clifton, City of Patterson, City of Passaic | |
Union County | |
Penns Grove, NJ (Not Classified - Maintenance) | |
Salem County (P) | |
Perth Amboy, NJ (Not Classified - Maintenance) | |
Middlesex County (P) | |
City of Perth Amboy | |
Philadelphia-Camden County, PA-NJ (Moderate <= 12.7ppm - Maintenance) | |
Camden County | |
Somerville, NJ (Not Classified - Maintenance) | |
Somerset County (P) | |
Borough of Somerville | |
Toms River, NJ (Not Classified - Maintenance) | |
Ocean County (P) | |
City of Toms River | |
Trenton, NJ (Not Classified - Maintenance) | |
Mercer County (P) | |
City of Trenton | |
NEW MEXICO (Region VI) | |
Albuquerque, NM (Moderate <= 12.7ppm - Maintenance) | |
Bernalillo County | |
NEW YORK (Region II) | |
New York-N. New Jersey-Long Island, NY-NJ-CT (Moderate > 12.7ppm - Maintenance) | |
Bronx County | |
Kings County | |
Nassau County | |
New York County | |
Queens County | |
Richmond County | |
Westchester County | |
Syracuse, NY (Moderate <= 12.7ppm - Maintenance) | |
Onondaga County | |
NORTH CAROLINA (Region IV) | |
Charlotte, NC (Not Classified - Maintenance) | |
Mecklenburg County | |
Raleigh-Durham, NC (Moderate <= 12.7ppm - Maintenance) | |
Durham County | |
Wake County | |
Winston-Salem, NC (Moderate <= 12.7ppm - Maintenance) | |
Forsyth County | |
OHIO (Region V) | |
Cleveland, OH (Moderate <= 12.7ppm - Maintenance) | |
Cuyahoga County | |
OREGON (Region X) | |
Eugene-Springfield, OR (Not Classified - Maintenance) | |
Lane County (P) | |
Air Quality Maintenance Area | |
Grants Pass, OR (Moderate <= 12.7ppm - Maintenance) | |
Josephine County (P) | |
Central Business District | |
Klamath Falls, OR (Moderate <= 12.7ppm - Maintenance) | |
Klamath County (P) | |
Urban Growth Boundary | |
Medford, OR (Moderate <= 12.7ppm - Maintenance) | |
Jackson County (P) | |
Medford-Ashland Urban Growth Boundary | |
Portland, OR (Moderate <= 12.7ppm - Maintenance) | |
Clackamas County (P) | |
Portland Metro Service District Boundary | |
Multnomah County (P) | |
Portland Metro Service District Boundary | |
Washington County (P) | |
Portland Metro Service District Boundary | |
Salem, OR (Not Classified - Maintenance) | |
Marion County (P) | |
City of Salem | |
Polk County (P) | |
City of Salem | |
PENNSYLVANIA (Region III) | |
Philadelphia-Camden County, PA-NJ (Moderate <= 12.7ppm - Maintenance) | |
Philadelphia County (P) | |
Pittsburgh, PA (Not Classified - Maintenance) | |
Allegheny County (P) | |
TENNESSEE (Region IV) | |
Memphis, TN (Moderate <= 12.7ppm - Maintenance) | |
Shelby County | |
TEXAS (Region VI) | |
El Paso, TX (Moderate <= 12.7ppm - Maintenance) | |
El Paso County (P) | |
Portion of the City Limits of El Paso | |
UTAH (Region VIII) | |
Ogden, UT (Moderate <= 12.7ppm - Maintenance) | |
Weber County (P) | |
City of Ogden | |
Provo, UT (Moderate > 12.7ppm - Maintenance) | |
Utah County (P) | |
City of Provo | |
Salt Lake City, UT (Not Classified - Maintenance) | |
Salt Lake County (P) | |
Salt Lake City | |
VIRGINIA (Region III) | |
Washington, DC-MD-VA (Moderate <= 12.7ppm - Maintenance) | |
Alexandria city | |
Arlington County | |
WASHINGTON (Region X) | |
Seattle-Tacoma, WA (Moderate > 12.7ppm - Maintenance) | |
King County (P) | |
Pierce County (P) | |
Snohomish County (P) | |
Spokane, WA (Serious - Maintenance) | |
Spokane County (P) | |
Vancouver, WA (Moderate <= 12.7ppm - Maintenance) | |
Clark County (P) | |
Yakima, WA (Not Classified - Maintenance) | |
Yakima County (P) | |
Portion of the Central Business District |
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