PM-2.5 (2006) Nonattainment Areas

Data is current as of November 30, 2025

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SERIOUS

Fairbanks, AK

Los Angeles-South Coast Air Basin, CA

Provo, UT

Salt Lake City, UT

San Joaquin Valley, CA

MODERATE

Imperial County, CA

Klamath Falls, OR

Sacramento, CA

San Francisco Bay Area, CA

West Central Pinal, AZ

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