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California

United States

2026-04-21 04:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
83.5
PM10
μg/m³
14.8
PM2.5
μg/m³
4.7
NO2
μg/m³
8.5
CO
μg/m³
338.5
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
17℃
37%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 30
Alpine County
AQI 10
Amador County
AQI 38
Butte County
AQI 34
Calaveras County
AQI 39
Colusa County
AQI 34
Contra Costa County
AQI 27
Del Norte County
AQI 5
El Dorado County
AQI 35
Fresno County
AQI 42
Glenn County
AQI 34
Humboldt County
AQI 14
Imperial County
AQI 56
Inyo County
AQI 55
Kern County
AQI 50
Kings County
AQI 41
Lake County
AQI 9
Lassen County
AQI 9
Los Angeles County
AQI 40
Madera County
AQI 32
Marin County
AQI 27
Mariposa County
AQI 56
Mendocino County
AQI 6
Merced County
AQI 42
Modoc County
AQI 1
Mono County
AQI 18
Monterey County
AQI 24
Napa County
AQI 5
Nevada County
AQI 15
Orange County
AQI 34
Placer County
AQI 35
Plumas County
AQI 8
Riverside County
AQI 42
Sacramento County
AQI 30
San Benito County
AQI 46
San Bernardino County
AQI 50
San Diego County
AQI 42
San Francisco County
AQI 25
San Joaquin County
AQI 24
San Luis Obispo County
AQI 37
San Mateo County
AQI 25
Santa Barbara County
AQI 30
Santa Clara County
AQI 27
Santa Cruz County
AQI 33
Shasta County
AQI 40
Sierra County
AQI 7
Siskiyou County
AQI 35
Solano County
AQI 32
Sonoma County
AQI 31
Stanislaus County
AQI 36
Sutter County
AQI 25
Tehama County
AQI 33
Trinity County
AQI 10
Tulare County
AQI 38
Tuolumne County
AQI 41
Ventura County
AQI 33
Yolo County
AQI 25
Yuba County
AQI 10
Data Sources
http://www.airnow.gov/

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