Check Today's Smog Levels in Your Area

Smog levels are reported by local air pollution districts and the news media using the Air Quality Index (AQI). The AQI shows, in simple terms, the current level of air pollution and any precautions needed.

California Cities (U.S. EPA site)

U.S. Metropolitan Areas (U.S. EPA site)

District Sites (Click on a city for today's smog level and tomorrow prediction.)

Los Angeles, Orange, Riverside and San Bernardino Counties Area

Sacramento

San Diego

San Francisco Bay Area

San Joaquin Valley

Santa Barbara

Ventura

Yolo/Solano