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California

United States

2025-12-31 17:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
10.5
PM10
μg/m³
14.9
NO2
μg/m³
22
O3
μg/m³
20.2
CO
μg/m³
524.9
SO2
μg/m³
1.8
Weather
  • ℃
  • ℉
15℃
74%
4 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • NO2
  • O3
  • CO
  • SO2
Places included
Alameda County
AQI 51
Alpine County
AQI 56
Amador County
AQI 50
Butte County
AQI 51
Calaveras County
AQI 50
Colusa County
AQI 53
Contra Costa County
AQI 50
Del Norte County
AQI 45
El Dorado County
AQI 26
Fresno County
AQI 66
Glenn County
AQI 56
Humboldt County
AQI 9
Imperial County
AQI 37
Inyo County
AQI 16
Kern County
AQI 51
Kings County
AQI 59
Lake County
AQI 57
Lassen County
AQI 50
Los Angeles County
AQI 26
Madera County
AQI 78
Marin County
AQI 26
Mariposa County
AQI 33
Mendocino County
AQI 60
Merced County
AQI 70
Modoc County
AQI 5
Mono County
AQI 27
Monterey County
AQI 13
Napa County
AQI 54
Nevada County
AQI 55
Orange County
AQI 22
Placer County
AQI 46
Plumas County
AQI 56
Riverside County
AQI 38
Sacramento County
AQI 55
San Benito County
AQI 40
San Bernardino County
AQI 36
San Diego County
AQI 29
San Francisco County
AQI 50
San Joaquin County
AQI 71
San Luis Obispo County
AQI 30
San Mateo County
AQI 56
Santa Barbara County
AQI 19
Santa Clara County
AQI 58
Santa Cruz County
AQI 26
Shasta County
AQI 65
Sierra County
AQI 63
Siskiyou County
AQI 78
Solano County
AQI 54
Sonoma County
AQI 63
Stanislaus County
AQI 82
Sutter County
AQI 57
Tehama County
AQI 20
Trinity County
AQI 61
Tulare County
AQI 68
Tuolumne County
AQI 46
Ventura County
AQI 27
Yolo County
AQI 55
Yuba County
AQI 57
Data Sources
http://www.airnow.gov/

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