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California

United States

2026-10-11 04:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
40.1
O3
μg/m³
67.9
PM2.5
μg/m³
8.4
NO2
μg/m³
10
CO
μg/m³
291
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
21℃
43%
11 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 27
Alpine County
AQI 10
Amador County
AQI 35
Butte County
AQI 41
Calaveras County
AQI 35
Colusa County
AQI 41
Contra Costa County
AQI 26
Del Norte County
AQI 14
El Dorado County
AQI 25
Fresno County
AQI 86
Glenn County
AQI 62
Humboldt County
AQI 41
Imperial County
AQI 15
Inyo County
AQI 27
Kern County
AQI 35
Kings County
AQI 105
Lake County
AQI 9
Lassen County
AQI 5
Los Angeles County
AQI 28
Madera County
AQI 78
Marin County
AQI 20
Mariposa County
AQI 38
Mendocino County
AQI 30
Merced County
AQI 47
Modoc County
AQI 4
Mono County
AQI 14
Monterey County
AQI 28
Napa County
AQI 14
Nevada County
AQI 13
Orange County
AQI 18
Placer County
AQI 23
Plumas County
AQI 3
Riverside County
AQI 18
Sacramento County
AQI 22
San Benito County
AQI 23
San Bernardino County
AQI 25
San Diego County
AQI 15
San Francisco County
AQI 21
San Joaquin County
AQI 25
San Luis Obispo County
AQI 37
San Mateo County
AQI 20
Santa Barbara County
AQI 26
Santa Clara County
AQI 23
Santa Cruz County
AQI 31
Shasta County
AQI 47
Sierra County
AQI 1
Siskiyou County
AQI 25
Solano County
AQI 21
Sonoma County
AQI 17
Stanislaus County
AQI 27
Sutter County
AQI 26
Tehama County
AQI 46
Trinity County
AQI 4
Tulare County
AQI 163
Tuolumne County
AQI 27
Ventura County
AQI 28
Yolo County
AQI 21
Yuba County
AQI 26
Data Sources
http://www.airnow.gov/

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