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California Whole or Part County Nonattainment Status by Year Since 1992 for all Criteria Pollutants

As of September 22, 2016

The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.
Listed by State, County, NAAQS (W=Whole County,P=Partial County designated nonattainment as of report date)

Select a State:   AK | AL | AR | AZ | CA | CO | CT | DC | DE | FL | GA | GU | IA | ID | IL | IN | KS | KY | LA | MA | MD | ME | MI | MN |
MO | MS | MT | NC | NE | NH | NJ | NM | NV | NY | OH | OR | PA | PR | RI | SC | TN | TX | UT | VA | WA | WI | WV | WY |
Important Notes
CALIFORNIA
County NAAQS 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
Alameda Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
Alameda Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Alameda Co 8-Hour Ozone (2008) W W W W W
Alameda Co Carbon Monoxide (1971) P P P P P P
Alameda Co PM-2.5 (2006) W W W W W W W W
Amador Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Butte Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Butte Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Butte Co 8-Hour Ozone (2008) W W W W W
Butte Co Carbon Monoxide (1971) P P P P P P
Butte Co PM-2.5 (2006) P P P P P P P P
Calaveras Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Calaveras Co 8-Hour Ozone (2008) W W W W W
Contra Costa Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
Contra Costa Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Contra Costa Co 8-Hour Ozone (2008) W W W W W
Contra Costa Co Carbon Monoxide (1971) P P P P P P
Contra Costa Co PM-2.5 (2006) W W W W W W W W
El Dorado Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
El Dorado Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
El Dorado Co 8-Hour Ozone (2008) P P P P P
El Dorado Co Carbon Monoxide (1971) P P P P P P
El Dorado Co PM-2.5 (2006) P P P P P P P P
Fresno Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Fresno Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Fresno Co 8-Hour Ozone (2008) W W W W W
Fresno Co Carbon Monoxide (1971) P P P P P P
Fresno Co PM-10 (1987) W W W W W W W W W W W W W W W W
Fresno Co PM-2.5 (1997) W W W W W W W W W W W W
Fresno Co PM-2.5 (2006) W W W W W W W W
Fresno Co PM-2.5 (2012) W W
Imperial Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Imperial Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Imperial Co 8-Hour Ozone (2008) W W W W W
Imperial Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Imperial Co PM-2.5 (2006) P P P P P P P P
Imperial Co PM-2.5 (2012) P P
Inyo Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Kern Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Kern Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Kern Co 8-Hour Ozone (2008) P P P P P
Kern Co Carbon Monoxide (1971) P P P P P P
Kern Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Kern Co PM-2.5 (1997) P P P P P P P P P P P P
Kern Co PM-2.5 (2006) P P P P P P P P
Kern Co PM-2.5 (2012) P P
Kings Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Kings Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Kings Co 8-Hour Ozone (2008) W W W W W
Kings Co PM-10 (1987) W W W W W W W W W W W W W W W W
Kings Co PM-2.5 (1997) W W W W W W W W W W W W
Kings Co PM-2.5 (2006) W W W W W W W W
Kings Co PM-2.5 (2012) W W
Los Angeles Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Los Angeles Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Los Angeles Co 8-Hour Ozone (2008) P P P P P
Los Angeles Co Carbon Monoxide (1971) P P P P P P P P P P P P P P P
Los Angeles Co Lead (2008) P P P P P P P
Los Angeles Co Nitrogen Dioxide (1971) P P P P P P
Los Angeles Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P
Los Angeles Co PM-2.5 (1997) P P P P P P P P P P P P
Los Angeles Co PM-2.5 (2006) P P P P P P P P
Los Angeles Co PM-2.5 (2012) P P
Madera Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Madera Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Madera Co 8-Hour Ozone (2008) W W W W W
Madera Co PM-10 (1987) W W W W W W W W W W W W W W W W
Madera Co PM-2.5 (1997) W W W W W W W W W W W W
Madera Co PM-2.5 (2006) W W W W W W W W
Madera Co PM-2.5 (2012) W W
Marin Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
Marin Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Marin Co 8-Hour Ozone (2008) W W W W W
Marin Co Carbon Monoxide (1971) P P P P P P
Marin Co PM-2.5 (2006) W W W W W W W W
Mariposa Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Mariposa Co 8-Hour Ozone (2008) W W W W W
Merced Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Merced Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Merced Co 8-Hour Ozone (2008) W W W W W
Merced Co PM-10 (1987) W W W W W W W W W W W W W W W W
Merced Co PM-2.5 (1997) W W W W W W W W W W W W
Merced Co PM-2.5 (2006) W W W W W W W W
Merced Co PM-2.5 (2012) W W
Mono Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Monterey Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W
Napa Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
Napa Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Napa Co 8-Hour Ozone (2008) W W W W W
Napa Co Carbon Monoxide (1971) P P P P P P
Napa Co PM-2.5 (2006) W W W W W W W W
Nevada Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Nevada Co 8-Hour Ozone (2008) P P P P P
Orange Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Orange Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Orange Co 8-Hour Ozone (2008) W W W W W
Orange Co Carbon Monoxide (1971) W W W W W W W W W W W W W W W
Orange Co Nitrogen Dioxide (1971) W W W W W W
Orange Co PM-10 (1987) W W W W W W W W W W W W W W W W W W W W W
Orange Co PM-2.5 (1997) W W W W W W W W W W W W
Orange Co PM-2.5 (2006) W W W W W W W W
Orange Co PM-2.5 (2012) W W
Placer Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Placer Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Placer Co 8-Hour Ozone (2008) P P P P P
Placer Co Carbon Monoxide (1971) P P P P P P
Placer Co PM-2.5 (2006) P P P P P P P P
Plumas Co PM-2.5 (2012) P P
Riverside Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Riverside Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Riverside Co 8-Hour Ozone (2008) P P P P P
Riverside Co Carbon Monoxide (1971) P P P P P P P P P P P P P P P
Riverside Co Nitrogen Dioxide (1971) P P P P P P
Riverside Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
Riverside Co PM-2.5 (1997) P P P P P P P P P P P P
Riverside Co PM-2.5 (2006) P P P P P P P P
Riverside Co PM-2.5 (2012) P P
Sacramento Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Sacramento Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Sacramento Co 8-Hour Ozone (2008) W W W W W
Sacramento Co Carbon Monoxide (1971) P P P P P P
Sacramento Co PM-10 (1987) W W W W W W W W W W W W W W W W W W W
Sacramento Co PM-2.5 (2006) W W W W W W W W
San Benito Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W
San Bernardino Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
San Bernardino Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
San Bernardino Co 8-Hour Ozone (2008) P P P P P
San Bernardino Co Carbon Monoxide (1971) P P P P P P P P P P P P P P P
San Bernardino Co Nitrogen Dioxide (1971) P P P P P P
San Bernardino Co PM-10 (1987) P P P P P P P P P P P P P P P P P P P P P P P P P
San Bernardino Co PM-2.5 (1997) P P P P P P P P P P P P
San Bernardino Co PM-2.5 (2006) P P P P P P P P
San Bernardino Co PM-2.5 (2012) P P
San Diego Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W
San Diego Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P
San Diego Co 8-Hour Ozone (2008) P P P P P
San Diego Co Carbon Monoxide (1971) P P P P P P
San Francisco Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
San Francisco Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
San Francisco Co 8-Hour Ozone (2008) W W W W W
San Francisco Co Carbon Monoxide (1971) W W W W W W
San Francisco Co PM-2.5 (2006) W W W W W W W W
San Joaquin Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
San Joaquin Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
San Joaquin Co 8-Hour Ozone (2008) W W W W W
San Joaquin Co Carbon Monoxide (1971) P P P P P P
San Joaquin Co PM-10 (1987) W W W W W W W W W W W W W W W W
San Joaquin Co PM-2.5 (1997) W W W W W W W W W W W W
San Joaquin Co PM-2.5 (2006) W W W W W W W W
San Joaquin Co PM-2.5 (2012) W W
San Luis Obispo Co 8-Hour Ozone (2008) P P P P P
San Mateo Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
San Mateo Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
San Mateo Co 8-Hour Ozone (2008) W W W W W
San Mateo Co Carbon Monoxide (1971) P P P P P P
San Mateo Co PM-2.5 (2006) W W W W W W W W
Santa Barbara Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W
Santa Clara Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W
Santa Clara Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Santa Clara Co 8-Hour Ozone (2008) W W W W W
Santa Clara Co Carbon Monoxide (1971) P P P P P P
Santa Clara Co PM-2.5 (2006) W W W W W W W W
Santa Cruz Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W
Solano Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Solano Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Solano Co 8-Hour Ozone (2008) P P P P P
Solano Co Carbon Monoxide (1971) P P P P P P
Solano Co PM-2.5 (2006) P P P P P P P P
Sonoma Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P
Sonoma Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Sonoma Co 8-Hour Ozone (2008) P P P P P
Sonoma Co Carbon Monoxide (1971) P P P P P P
Sonoma Co PM-2.5 (2006) P P P P P P P P
Stanislaus Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Stanislaus Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Stanislaus Co 8-Hour Ozone (2008) W W W W W
Stanislaus Co Carbon Monoxide (1971) P P P P P P
Stanislaus Co PM-10 (1987) W W W W W W W W W W W W W W W W
Stanislaus Co PM-2.5 (1997) W W W W W W W W W W W W
Stanislaus Co PM-2.5 (2006) W W W W W W W W
Stanislaus Co PM-2.5 (2012) W W
Sutter Co 1-Hour Ozone (1979)-NAAQS revoked P P P P P P P P P P P P P
Sutter Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Sutter Co 8-Hour Ozone (2008) P P P P P
Sutter Co PM-2.5 (2006) W W W W W W
Tehama Co 8-Hour Ozone (2008) P P P P P
Tulare Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Tulare Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Tulare Co 8-Hour Ozone (2008) W W W W W
Tulare Co PM-10 (1987) W W W W W W W W W W W W W W W W
Tulare Co PM-2.5 (1997) W W W W W W W W W W W W
Tulare Co PM-2.5 (2006) W W W W W W W W
Tulare Co PM-2.5 (2012) W W
Tuolumne Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Ventura Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Ventura Co 8-Hour Ozone (1997)-NAAQS revoked P P P P P P P P P P P P
Ventura Co 8-Hour Ozone (2008) P P P P P
Yolo Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Yolo Co 8-Hour Ozone (1997)-NAAQS revoked W W W W W W W W W W W W
Yolo Co 8-Hour Ozone (2008) W W W W W
Yolo Co Carbon Monoxide (1971) P P P P P P
Yolo Co PM-2.5 (2006) P P P P P P P P
Yuba Co 1-Hour Ozone (1979)-NAAQS revoked W W W W W W W W W W W W W
Yuba Co PM-2.5 (2006) P P P P P P
Important Notes

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