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  3. California

California

United States

2026-10-17 04:00
AQI (US)
Moderate
Pollutants|Pollens
PM10
μg/m³
59.9
PM2.5
μg/m³
9
O3
μg/m³
70.8
NO2
μg/m³
37.9
CO
μg/m³
647.8
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
18℃
36%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM10
  • PM2.5
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 63
Alpine County
AQI 12
Amador County
AQI 45
Butte County
AQI 53
Calaveras County
AQI 45
Colusa County
AQI 77
Contra Costa County
AQI 75
Del Norte County
AQI 6
El Dorado County
AQI 54
Fresno County
AQI 84
Glenn County
AQI 38
Humboldt County
AQI 12
Imperial County
AQI 123
Inyo County
AQI 38
Kern County
AQI 54
Kings County
AQI 75
Lake County
AQI 29
Lassen County
AQI 57
Los Angeles County
AQI 43
Madera County
AQI 79
Marin County
AQI 23
Mariposa County
AQI 96
Mendocino County
AQI 29
Merced County
AQI 85
Modoc County
AQI 18
Mono County
AQI 12
Monterey County
AQI 43
Napa County
AQI 64
Nevada County
AQI 34
Orange County
AQI 36
Placer County
AQI 49
Plumas County
AQI 18
Riverside County
AQI 33
Sacramento County
AQI 62
San Benito County
AQI 43
San Bernardino County
AQI 33
San Diego County
AQI 52
San Francisco County
AQI 54
San Joaquin County
AQI 70
San Luis Obispo County
AQI 54
San Mateo County
AQI 50
Santa Barbara County
AQI 37
Santa Clara County
AQI 55
Santa Cruz County
AQI 33
Shasta County
AQI 52
Sierra County
AQI 18
Siskiyou County
AQI 28
Solano County
AQI 54
Sonoma County
AQI 54
Stanislaus County
AQI 85
Sutter County
AQI 67
Tehama County
AQI 52
Trinity County
AQI 23
Tulare County
AQI 64
Tuolumne County
AQI 28
Ventura County
AQI 37
Yolo County
AQI 61
Yuba County
AQI 61
Data Sources
http://www.airnow.gov/

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