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California

United States

2026-10-19 05:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
33.2
O3
μg/m³
63
PM2.5
μg/m³
7.9
NO2
μg/m³
15.9
CO
μg/m³
403
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
20℃
46%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 29
Alpine County
AQI 12
Amador County
AQI 18
Butte County
AQI 29
Calaveras County
AQI 21
Colusa County
AQI 21
Contra Costa County
AQI 59
Del Norte County
AQI 10
El Dorado County
AQI 17
Fresno County
AQI 54
Glenn County
AQI 15
Humboldt County
AQI 18
Imperial County
AQI 38
Inyo County
AQI 28
Kern County
AQI 51
Kings County
AQI 72
Lake County
AQI 10
Lassen County
AQI 6
Los Angeles County
AQI 51
Madera County
AQI 41
Marin County
AQI 20
Mariposa County
AQI 46
Mendocino County
AQI 25
Merced County
AQI 30
Modoc County
AQI 4
Mono County
AQI 8
Monterey County
AQI 30
Napa County
AQI 7
Nevada County
AQI 11
Orange County
AQI 54
Placer County
AQI 22
Plumas County
AQI 8
Riverside County
AQI 45
Sacramento County
AQI 23
San Benito County
AQI 22
San Bernardino County
AQI 42
San Diego County
AQI 47
San Francisco County
AQI 21
San Joaquin County
AQI 54
San Luis Obispo County
AQI 31
San Mateo County
AQI 9
Santa Barbara County
AQI 25
Santa Clara County
AQI 20
Santa Cruz County
AQI 20
Shasta County
AQI 69
Sierra County
AQI 11
Siskiyou County
AQI 16
Solano County
AQI 22
Sonoma County
AQI 12
Stanislaus County
AQI 25
Sutter County
AQI 23
Tehama County
AQI 69
Trinity County
AQI 10
Tulare County
AQI 64
Tuolumne County
AQI 19
Ventura County
AQI 44
Yolo County
AQI 23
Yuba County
AQI 16
Data Sources
http://www.airnow.gov/

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