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California

United States

2026-01-19 22:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
8.2
O3
μg/m³
54.9
PM10
μg/m³
16.4
NO2
μg/m³
15.6
CO
μg/m³
450.5
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
22℃
42%
4 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 40
Alpine County
AQI 57
Amador County
AQI 23
Butte County
AQI 53
Calaveras County
AQI 18
Colusa County
AQI 52
Contra Costa County
AQI 55
Del Norte County
AQI 30
El Dorado County
AQI 50
Fresno County
AQI 58
Glenn County
AQI 39
Humboldt County
AQI 15
Imperial County
AQI 41
Inyo County
AQI 33
Kern County
AQI 60
Kings County
AQI 69
Lake County
AQI 15
Lassen County
AQI 17
Los Angeles County
AQI 45
Madera County
AQI 65
Marin County
AQI 28
Mariposa County
AQI 59
Mendocino County
AQI 29
Merced County
AQI 61
Modoc County
AQI 5
Mono County
AQI 18
Monterey County
AQI 31
Napa County
AQI 50
Nevada County
AQI 29
Orange County
AQI 46
Placer County
AQI 41
Plumas County
AQI 17
Riverside County
AQI 40
Sacramento County
AQI 57
San Benito County
AQI 35
San Bernardino County
AQI 35
San Diego County
AQI 48
San Francisco County
AQI 54
San Joaquin County
AQI 55
San Luis Obispo County
AQI 31
San Mateo County
AQI 54
Santa Barbara County
AQI 37
Santa Clara County
AQI 52
Santa Cruz County
AQI 36
Shasta County
AQI 34
Sierra County
AQI 17
Siskiyou County
AQI 32
Solano County
AQI 56
Sonoma County
AQI 29
Stanislaus County
AQI 83
Sutter County
AQI 55
Tehama County
AQI 23
Trinity County
AQI 43
Tulare County
AQI 68
Tuolumne County
AQI 29
Ventura County
AQI 38
Yolo County
AQI 64
Yuba County
AQI 56
Data Sources
http://www.airnow.gov/

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