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California

United States

2025-12-17 16:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
9
PM10
μg/m³
22.7
NO2
μg/m³
25.4
O3
μg/m³
19.2
CO
μg/m³
659.9
SO2
μg/m³
3
Weather
  • ℃
  • ℉
16℃
59%
3 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • NO2
  • O3
  • CO
  • SO2
Places included
Alameda County
AQI 52
Alpine County
AQI 23
Amador County
AQI 17
Butte County
AQI 28
Calaveras County
AQI 17
Colusa County
AQI 56
Contra Costa County
AQI 37
Del Norte County
AQI 23
El Dorado County
AQI 15
Fresno County
AQI 55
Glenn County
AQI 45
Humboldt County
AQI 29
Imperial County
AQI 74
Inyo County
AQI 19
Kern County
AQI 47
Kings County
AQI 55
Lake County
AQI 30
Lassen County
AQI 39
Los Angeles County
AQI 93
Madera County
AQI 89
Marin County
AQI 11
Mariposa County
AQI 26
Mendocino County
AQI 18
Merced County
AQI 90
Modoc County
AQI 5
Mono County
AQI 16
Monterey County
AQI 31
Napa County
AQI 17
Nevada County
AQI 11
Orange County
AQI 67
Placer County
AQI 15
Plumas County
AQI 20
Riverside County
AQI 59
Sacramento County
AQI 62
San Benito County
AQI 36
San Bernardino County
AQI 67
San Diego County
AQI 65
San Francisco County
AQI 54
San Joaquin County
AQI 66
San Luis Obispo County
AQI 38
San Mateo County
AQI 42
Santa Barbara County
AQI 26
Santa Clara County
AQI 54
Santa Cruz County
AQI 38
Shasta County
AQI 14
Sierra County
AQI 6
Siskiyou County
AQI 25
Solano County
AQI 23
Sonoma County
AQI 16
Stanislaus County
AQI 87
Sutter County
AQI 51
Tehama County
AQI 12
Trinity County
AQI 6
Tulare County
AQI 47
Tuolumne County
AQI 5
Ventura County
AQI 50
Yolo County
AQI 69
Yuba County
AQI 30
Data Sources
http://www.airnow.gov/

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