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  3. California

California

United States

2026-03-12 12:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
8.2
O3
μg/m³
33
PM10
μg/m³
15.1
NO2
μg/m³
22
CO
μg/m³
497.4
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
12℃
73%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 23
Alpine County
AQI 117
Amador County
AQI 12
Butte County
AQI 60
Calaveras County
AQI 12
Colusa County
AQI 29
Contra Costa County
AQI 24
Del Norte County
AQI 34
El Dorado County
AQI 44
Fresno County
AQI 53
Glenn County
AQI 17
Humboldt County
AQI 10
Imperial County
AQI 51
Inyo County
AQI 26
Kern County
AQI 44
Kings County
AQI 56
Lake County
AQI 93
Lassen County
AQI 34
Los Angeles County
AQI 54
Madera County
AQI 34
Marin County
AQI 10
Mariposa County
AQI 35
Mendocino County
AQI 82
Merced County
AQI 35
Modoc County
AQI 5
Mono County
AQI 8
Monterey County
AQI 25
Napa County
AQI 15
Nevada County
AQI 23
Orange County
AQI 60
Placer County
AQI 22
Plumas County
AQI 46
Riverside County
AQI 48
Sacramento County
AQI 54
San Benito County
AQI 39
San Bernardino County
AQI 54
San Diego County
AQI 53
San Francisco County
AQI 58
San Joaquin County
AQI 50
San Luis Obispo County
AQI 33
San Mateo County
AQI 30
Santa Barbara County
AQI 20
Santa Clara County
AQI 37
Santa Cruz County
AQI 37
Shasta County
AQI 26
Sierra County
AQI 52
Siskiyou County
AQI 35
Solano County
AQI 24
Sonoma County
AQI 12
Stanislaus County
AQI 59
Sutter County
AQI 55
Tehama County
AQI 14
Trinity County
AQI 23
Tulare County
AQI 54
Tuolumne County
AQI 44
Ventura County
AQI 26
Yolo County
AQI 52
Yuba County
AQI 48
Data Sources
http://www.airnow.gov/

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