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California

United States

2026-04-21 02:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
93.1
PM10
μg/m³
18.2
PM2.5
μg/m³
4.6
NO2
μg/m³
7.8
CO
μg/m³
341.1
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
20℃
30%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 29
Alpine County
AQI 11
Amador County
AQI 42
Butte County
AQI 36
Calaveras County
AQI 45
Colusa County
AQI 32
Contra Costa County
AQI 27
Del Norte County
AQI 4
El Dorado County
AQI 42
Fresno County
AQI 58
Glenn County
AQI 32
Humboldt County
AQI 21
Imperial County
AQI 55
Inyo County
AQI 55
Kern County
AQI 53
Kings County
AQI 44
Lake County
AQI 9
Lassen County
AQI 5
Los Angeles County
AQI 46
Madera County
AQI 42
Marin County
AQI 25
Mariposa County
AQI 57
Mendocino County
AQI 19
Merced County
AQI 39
Modoc County
AQI 1
Mono County
AQI 18
Monterey County
AQI 32
Napa County
AQI 4
Nevada County
AQI 13
Orange County
AQI 40
Placer County
AQI 38
Plumas County
AQI 11
Riverside County
AQI 46
Sacramento County
AQI 36
San Benito County
AQI 50
San Bernardino County
AQI 55
San Diego County
AQI 46
San Francisco County
AQI 25
San Joaquin County
AQI 30
San Luis Obispo County
AQI 39
San Mateo County
AQI 24
Santa Barbara County
AQI 34
Santa Clara County
AQI 31
Santa Cruz County
AQI 35
Shasta County
AQI 43
Sierra County
AQI 14
Siskiyou County
AQI 40
Solano County
AQI 30
Sonoma County
AQI 34
Stanislaus County
AQI 42
Sutter County
AQI 33
Tehama County
AQI 37
Trinity County
AQI 14
Tulare County
AQI 50
Tuolumne County
AQI 50
Ventura County
AQI 44
Yolo County
AQI 33
Yuba County
AQI 9
Data Sources
http://www.airnow.gov/

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