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  3. California

California

United States

2026-10-09 07:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
6.8
PM10
μg/m³
33
O3
μg/m³
57.8
NO2
μg/m³
19.3
CO
μg/m³
369.4
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
24℃
43%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 37
Alpine County
AQI 18
Amador County
AQI 21
Butte County
AQI 38
Calaveras County
AQI 33
Colusa County
AQI 64
Contra Costa County
AQI 29
Del Norte County
AQI 23
El Dorado County
AQI 30
Fresno County
AQI 76
Glenn County
AQI 51
Humboldt County
AQI 28
Imperial County
AQI 26
Inyo County
AQI 32
Kern County
AQI 53
Kings County
AQI 72
Lake County
AQI 38
Lassen County
AQI 23
Los Angeles County
AQI 36
Madera County
AQI 66
Marin County
AQI 23
Mariposa County
AQI 74
Mendocino County
AQI 29
Merced County
AQI 76
Modoc County
AQI 19
Mono County
AQI 20
Monterey County
AQI 41
Napa County
AQI 28
Nevada County
AQI 35
Orange County
AQI 48
Placer County
AQI 32
Plumas County
AQI 25
Riverside County
AQI 43
Sacramento County
AQI 32
San Benito County
AQI 33
San Bernardino County
AQI 41
San Diego County
AQI 49
San Francisco County
AQI 34
San Joaquin County
AQI 38
San Luis Obispo County
AQI 23
San Mateo County
AQI 38
Santa Barbara County
AQI 27
Santa Clara County
AQI 40
Santa Cruz County
AQI 32
Shasta County
AQI 29
Sierra County
AQI 25
Siskiyou County
AQI 45
Solano County
AQI 31
Sonoma County
AQI 18
Stanislaus County
AQI 53
Sutter County
AQI 63
Tehama County
AQI 38
Trinity County
AQI 12
Tulare County
AQI 83
Tuolumne County
AQI 33
Ventura County
AQI 32
Yolo County
AQI 43
Yuba County
AQI 62
Data Sources
http://www.airnow.gov/

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