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California

United States

2026-10-19 02:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
31.2
O3
μg/m³
87
PM2.5
μg/m³
7.1
NO2
μg/m³
10.4
CO
μg/m³
363.9
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
22℃
35%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 20
Alpine County
AQI 15
Amador County
AQI 28
Butte County
AQI 41
Calaveras County
AQI 33
Colusa County
AQI 53
Contra Costa County
AQI 23
Del Norte County
AQI 8
El Dorado County
AQI 27
Fresno County
AQI 51
Glenn County
AQI 30
Humboldt County
AQI 22
Imperial County
AQI 36
Inyo County
AQI 30
Kern County
AQI 33
Kings County
AQI 57
Lake County
AQI 6
Lassen County
AQI 5
Los Angeles County
AQI 46
Madera County
AQI 47
Marin County
AQI 20
Mariposa County
AQI 38
Mendocino County
AQI 8
Merced County
AQI 44
Modoc County
AQI 6
Mono County
AQI 6
Monterey County
AQI 43
Napa County
AQI 13
Nevada County
AQI 10
Orange County
AQI 55
Placer County
AQI 25
Plumas County
AQI 4
Riverside County
AQI 38
Sacramento County
AQI 23
San Benito County
AQI 30
San Bernardino County
AQI 33
San Diego County
AQI 49
San Francisco County
AQI 20
San Joaquin County
AQI 24
San Luis Obispo County
AQI 34
San Mateo County
AQI 9
Santa Barbara County
AQI 41
Santa Clara County
AQI 24
Santa Cruz County
AQI 22
Shasta County
AQI 53
Sierra County
AQI 9
Siskiyou County
AQI 26
Solano County
AQI 24
Sonoma County
AQI 21
Stanislaus County
AQI 29
Sutter County
AQI 44
Tehama County
AQI 53
Trinity County
AQI 13
Tulare County
AQI 39
Tuolumne County
AQI 31
Ventura County
AQI 51
Yolo County
AQI 25
Yuba County
AQI 44
Data Sources
http://www.airnow.gov/

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