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Nonattainment Areas
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View Nonattainment Areas for
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| Nonattainment Area |
Pollutant |
Classification |
| Ajo (Pima County), AZ |
PM-10 |
Moderate |
| Ajo (Pima County), AZ |
Sulfur dioxide |
Primary |
| Albany-Schenectady-Troy, NY |
Ozone |
Marginal |
| Allentown-Bethlehem-Easton, PA-NJ |
Ozone |
Marginal |
| Altoona, PA |
Ozone |
Marginal |
| Anchorage, AK |
Carbon monoxide |
Serious |
| Anthony, NM |
PM-10 |
Moderate |
| Armstrong Co, PA |
Sulfur dioxide |
Primary |
| Aspen, CO |
PM-10 |
Moderate |
| Atlanta, GA |
Ozone |
Severe-15 |
| Atlantic City, NJ |
Ozone |
Moderate |
| Baltimore, MD |
Ozone |
Severe-15 |
| Baton Rouge, LA |
Ozone |
Severe-15 |
| Beaumont-Port Arthur, TX |
Ozone |
Serious |
| Birmingham, AL |
Ozone |
Marginal |
| Bonner Co (Sandpoint), ID |
PM-10 |
Moderate |
| Boston-Lawrence-Worcester (E. MA), MA-NH |
Ozone |
Serious |
| Boyd County (part), KY |
Sulfur dioxide |
Primary |
| Buffalo-Niagara Falls, NY |
Ozone |
Marginal |
| Butte, MT |
PM-10 |
Moderate |
| Cheshire Co, NH |
Ozone |
Incomplete Data |
| Chicago-Gary-Lake County, IL-IN |
Ozone |
Severe-17 |
| Chico, CA |
Ozone |
Section 185A |
| Cincinnati-Hamilton, OH-KY (OH Portion) |
Ozone |
Moderate |
| Clairton & 4 Boroughs, PA |
PM-10 |
Moderate |
| Clark Co, NV |
PM-10 |
Serious |
| Coachella Valley, CA |
PM-10 |
Serious |
| Columbia Falls, MT |
PM-10 |
Moderate |
| Conewango Township (Warren County), PA |
Sulfur dioxide |
Primary |
| Coso Junction, CA |
PM-10 |
Moderate |
| Crawford Co, PA |
Ozone |
Incomplete Data |
| Cuyahoga Co, OH |
Sulfur dioxide |
Primary |
| Dallas-Fort Worth, TX |
Ozone |
Serious |
| Douglas (Cochise County), AZ |
PM-10 |
Moderate |
| Douglas (Cochise County), AZ |
Sulfur dioxide |
Primary |
| Eagle River, AK |
PM-10 |
Moderate |
| East Helena Area (Lewis and Clark Co.), MT |
Lead |
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| East Helena Area (Lewis and Clark Co.), MT |
Sulfur dioxide |
Primary, Secondary |
| East Kern Co, CA |
Ozone |
Serious |
| El Paso, TX |
Carbon monoxide |
Moderate <= 12.7ppm |
| El Paso, TX |
Ozone |
Serious |
| El Paso, TX |
PM-10 |
Moderate |
| Erie, PA |
Ozone |
Marginal |
| Essex Co, NY |
Ozone |
Marginal RT |
| Eugene-Springfield, OR |
PM-10 |
Moderate |
| Fairbanks, AK |
Carbon monoxide |
Serious |
| Flathead County; Whitefish and vicinity, MT |
PM-10 |
Moderate |
| Follansbee, WV |
PM-10 |
Moderate |
| Fort Collins, CO |
Carbon monoxide |
Moderate <= 12.7ppm |
| Fort Hall Reservation, ID |
PM-10 |
Moderate |
| Franklin Co, PA |
Ozone |
Incomplete Data |
| Grant Co, NM |
Sulfur dioxide |
Primary |
| Grants Pass, OR |
PM-10 |
Moderate |
| Greater Connecticut, CT |
Ozone |
Serious |
| Greene Co, PA |
Ozone |
Incomplete Data |
| Harrisburg-Lebanon-Carlisle, PA |
Ozone |
Marginal |
| Hayden (Pinal County), AZ |
Sulfur dioxide |
Primary |
| Hayden/Miami, AZ |
PM-10 |
Moderate |
| Hazelwood, PA |
Sulfur dioxide |
Primary |
| Houston-Galveston-Brazoria, TX |
Ozone |
Severe-17 |
| Imperial Co, CA |
Ozone |
Section 185A |
| Imperial Valley, CA |
PM-10 |
Serious |
| Indian Wells, CA |
PM-10 |
Moderate |
| Iron County (part); Liberty and Arcadia, MO |
Lead |
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| Jefferson Co, NY |
Ozone |
Marginal* |
| Jefferson County (part); Herculaneum, MO |
Lead |
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| Johnstown, PA |
Ozone |
Marginal |
| Juneau, AK |
PM-10 |
Moderate |
| Juniata Co, PA |
Ozone |
Incomplete Data |
| Kalispell, MT |
PM-10 |
Moderate |
| Kent & Queen Anne's Co.s, MD |
Ozone |
Marginal |
| Klamath Falls, OR |
PM-10 |
Moderate |
| Knox & Lincoln Co.s, ME |
Ozone |
Moderate* |
| LaGrande, OR |
PM-10 |
Moderate |
| Lake Co, OR |
PM-10 |
Moderate |
| Lake County, IN |
Sulfur dioxide |
Primary |
| Lake Tahoe, NV |
Carbon monoxide |
Not Classified |
| Lamar, CO |
PM-10 |
Moderate |
| Lame Deer, MT |
PM-10 |
Moderate |
| Lancaster, PA |
Ozone |
Marginal |
| Lane Co, OR |
PM-10 |
Moderate |
| Las Vegas, NV |
Carbon monoxide |
Serious |
| Laurel Area (Yellowstone County), MT |
Sulfur dioxide |
Primary |
| Lawrence Co, PA |
Ozone |
Incomplete Data |
| Lewiston-Auburn, ME |
Ozone |
Moderate* |
| Libby, MT |
PM-10 |
Moderate |
| Los Angeles South Coast Air Basin, CA |
Carbon monoxide |
Serious |
| Los Angeles South Coast Air Basin, CA |
Ozone |
Extreme |
| Los Angeles South Coast Air Basin, CA |
PM-10 |
Serious |
| Lucas Co, OH |
Sulfur dioxide |
Primary |
| Lyons Twsp., IL |
PM-10 |
Moderate |
| Manchester, NH |
Ozone |
Marginal |
| Medford-Ashland, OR |
PM-10 |
Moderate |
| Miami (Gila County), AZ |
Sulfur dioxide |
Primary |
| Milwaukee-Racine, WI |
Ozone |
Severe-17 |
| Missoula, MT |
Carbon monoxide |
Moderate <= 12.7ppm |
| Missoula, MT |
PM-10 |
Moderate |
| Mono Basin, CA |
PM-10 |
Moderate |
| Morenci (Greenlee County), AZ |
Sulfur dioxide |
Primary |
| Mun. of Guaynabo, PR |
PM-10 |
Moderate |
| New Haven Co, CT |
PM-10 |
Moderate |
| New Manchester-Grant Mag. Dis (Hancock), WV |
Sulfur dioxide |
Primary |
| New York Co, NY |
PM-10 |
Moderate |
| New York-N. New Jersey-Long Island, NY-NJ-CT |
Ozone |
Severe-17 |
| Nogales, AZ |
PM-10 |
Moderate |
| Northumberland Co, PA |
Ozone |
Incomplete Data |
| Ogden, UT |
PM-10 |
Moderate |
| Owens Valley, CA |
PM-10 |
Serious |
| Paul Spur, AZ |
PM-10 |
Moderate |
| Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD |
Ozone |
Severe-15 |
| Phoenix, AZ |
Carbon monoxide |
Serious |
| Phoenix, AZ |
Ozone |
Serious |
| Phoenix, AZ |
PM-10 |
Serious |
| Pike Co, PA |
Ozone |
Incomplete Data |
| Pinehurst, ID |
PM-10 |
Moderate |
| Piti, GU |
Sulfur dioxide |
Primary |
| Polson, MT |
PM-10 |
Moderate |
| Portland, ME |
Ozone |
Moderate |
| Portneuf Valley, ID |
PM-10 |
Moderate |
| Portsmouth-Dover-Rochester, NH |
Ozone |
Serious |
| Poughkeepsie, NY |
Ozone |
Moderate |
| Providence (All RI), RI |
Ozone |
Serious |
| Provo, UT |
Carbon monoxide |
Moderate > 12.7ppm |
| Reno, NV |
Carbon monoxide |
Moderate <= 12.7ppm |
| Reno, NV |
Ozone |
Marginal |
| Rillito, AZ |
PM-10 |
Moderate |
| Ronan, MT |
PM-10 |
Moderate |
| Sacramento Co, CA |
PM-10 |
Moderate |
| Sacramento Metro, CA |
Ozone |
Severe-15 |
| Salem, OR |
Carbon monoxide |
Not Classified |
| Salem, OR |
Ozone |
Incomplete Data |
| Salt Lake Co, UT |
PM-10 |
Moderate |
| Salt Lake Co, UT |
Sulfur dioxide |
Primary, Secondary |
| San Bernardino Co, CA |
PM-10 |
Moderate |
| San Diego, CA |
Ozone |
Serious |
| San Francisco Bay Area, CA |
Ozone |
Other |
| San Joaquin Valley, CA |
Ozone |
Extreme |
| San Joaquin Valley, CA |
PM-10 |
Serious |
| San Manual (Pinal County), AZ |
Sulfur dioxide |
Primary |
| Sanders County (part);Thompson Falls and vicinity,MT |
PM-10 |
Moderate |
| Santa Barbara-Santa Maria-Lompoc, CA |
Ozone |
Serious |
| Schuylkill Co, PA |
Ozone |
Incomplete Data |
| Scranton-Wilkes-Barre, PA |
Ozone |
Marginal |
| Sheridan, WY |
PM-10 |
Moderate |
| Shoshone Co, ID |
PM-10 |
Moderate |
| Smyth Co, VA (White Top Mtn) |
Ozone |
Marginal RT |
| Snyder Co, PA |
Ozone |
Incomplete Data |
| Southeast Chicago, IL |
PM-10 |
Moderate |
| Southeast Desert Modified AQMA, CA |
Ozone |
Severe-17 |
| Spokane, WA |
Carbon monoxide |
Serious |
| Spokane, WA |
PM-10 |
Moderate |
| Springfield (Western MA), MA |
Ozone |
Serious |
| Steamboat Springs |
PM-10 |
Moderate |
| Sunland Park, NM (New Area 1995) |
Ozone |
Marginal |
| Susquehanna Co, PA |
Ozone |
Incomplete Data |
| Sussex Co, DE |
Ozone |
Marginal |
| Tanguisson, GU |
Sulfur dioxide |
Primary |
| Tooele Co, UT |
Sulfur dioxide |
Primary, Secondary |
| Utah Co, UT |
PM-10 |
Moderate |
| Ventura Co, CA |
Ozone |
Severe-15* |
| Wallula, WA |
PM-10 |
Serious |
| Warren Co, NJ |
Sulfur dioxide |
Primary, Secondary |
| Warren Co, PA |
Ozone |
Incomplete Data |
| Warren Co, PA |
Sulfur dioxide |
Primary, Secondary |
| Washington, DC-MD-VA |
Ozone |
Severe-15 |
| Washoe Co, NV |
PM-10 |
Serious |
| Wayne Co, PA |
Ozone |
Incomplete Data |
| Weirton, WV |
PM-10 |
Moderate |
| Weirton, WV |
Sulfur dioxide |
Primary, Secondary |
| Yakima Co, WA |
PM-10 |
Moderate |
| York, PA |
Ozone |
Marginal |
| Youngstown-Warren-Sharon, PA portion |
Ozone |
Marginal |
| Yuba City, CA |
Ozone |
Section 185A |
| Yuma, AZ |
PM-10 |
Moderate |
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