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California

United States

2025-12-31 06:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
13.6
PM10
μg/m³
17.4
O3
μg/m³
25.2
NO2
μg/m³
19.7
CO
μg/m³
501.8
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
6℃
100%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 51
Alpine County
AQI 69
Amador County
AQI 60
Butte County
AQI 42
Calaveras County
AQI 60
Colusa County
AQI 55
Contra Costa County
AQI 59
Del Norte County
AQI 53
El Dorado County
AQI 57
Fresno County
AQI 70
Glenn County
AQI 73
Humboldt County
AQI 31
Imperial County
AQI 22
Inyo County
AQI 13
Kern County
AQI 50
Kings County
AQI 70
Lake County
AQI 55
Lassen County
AQI 68
Los Angeles County
AQI 27
Madera County
AQI 78
Marin County
AQI 60
Mariposa County
AQI 38
Mendocino County
AQI 66
Merced County
AQI 66
Modoc County
AQI 6
Mono County
AQI 27
Monterey County
AQI 27
Napa County
AQI 54
Nevada County
AQI 52
Orange County
AQI 35
Placer County
AQI 53
Plumas County
AQI 108
Riverside County
AQI 34
Sacramento County
AQI 57
San Benito County
AQI 60
San Bernardino County
AQI 57
San Diego County
AQI 27
San Francisco County
AQI 52
San Joaquin County
AQI 58
San Luis Obispo County
AQI 55
San Mateo County
AQI 52
Santa Barbara County
AQI 28
Santa Clara County
AQI 57
Santa Cruz County
AQI 45
Shasta County
AQI 78
Sierra County
AQI 127
Siskiyou County
AQI 71
Solano County
AQI 51
Sonoma County
AQI 64
Stanislaus County
AQI 64
Sutter County
AQI 46
Tehama County
AQI 63
Trinity County
AQI 108
Tulare County
AQI 72
Tuolumne County
AQI 51
Ventura County
AQI 31
Yolo County
AQI 57
Yuba County
AQI 33
Data Sources
http://www.airnow.gov/

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