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California

United States

2026-10-19 10:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
23.2
O3
μg/m³
52.3
PM2.5
μg/m³
5.7
NO2
μg/m³
14
CO
μg/m³
363.9
SO2
μg/m³
1
Weather
  • ℃
  • ℉
17℃
43%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 37
Alpine County
AQI 9
Amador County
AQI 13
Butte County
AQI 25
Calaveras County
AQI 15
Colusa County
AQI 19
Contra Costa County
AQI 22
Del Norte County
AQI 5
El Dorado County
AQI 15
Fresno County
AQI 38
Glenn County
AQI 11
Humboldt County
AQI 16
Imperial County
AQI 21
Inyo County
AQI 21
Kern County
AQI 39
Kings County
AQI 46
Lake County
AQI 5
Lassen County
AQI 7
Los Angeles County
AQI 37
Madera County
AQI 29
Marin County
AQI 19
Mariposa County
AQI 33
Mendocino County
AQI 16
Merced County
AQI 27
Modoc County
AQI 4
Mono County
AQI 10
Monterey County
AQI 14
Napa County
AQI 6
Nevada County
AQI 10
Orange County
AQI 37
Placer County
AQI 19
Plumas County
AQI 9
Riverside County
AQI 28
Sacramento County
AQI 18
San Benito County
AQI 20
San Bernardino County
AQI 32
San Diego County
AQI 38
San Francisco County
AQI 21
San Joaquin County
AQI 26
San Luis Obispo County
AQI 18
San Mateo County
AQI 6
Santa Barbara County
AQI 25
Santa Clara County
AQI 20
Santa Cruz County
AQI 20
Shasta County
AQI 28
Sierra County
AQI 3
Siskiyou County
AQI 13
Solano County
AQI 21
Sonoma County
AQI 19
Stanislaus County
AQI 35
Sutter County
AQI 27
Tehama County
AQI 28
Trinity County
AQI 9
Tulare County
AQI 50
Tuolumne County
AQI 20
Ventura County
AQI 37
Yolo County
AQI 20
Yuba County
AQI 18
Data Sources
http://www.airnow.gov/

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