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California

United States

2026-10-17 03:00
AQI (China)
Good
Pollutants|Pollens
PM10
μg/m³
58.5
O3
μg/m³
78.3
NO2
μg/m³
32.3
PM2.5
μg/m³
8.1
CO
μg/m³
585.9
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
21℃
34%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 81
Alpine County
AQI 13
Amador County
AQI 47
Butte County
AQI 69
Calaveras County
AQI 47
Colusa County
AQI 84
Contra Costa County
AQI 73
Del Norte County
AQI 2
El Dorado County
AQI 38
Fresno County
AQI 84
Glenn County
AQI 33
Humboldt County
AQI 16
Imperial County
AQI 137
Inyo County
AQI 28
Kern County
AQI 51
Kings County
AQI 87
Lake County
AQI 8
Lassen County
AQI 19
Los Angeles County
AQI 47
Madera County
AQI 78
Marin County
AQI 17
Mariposa County
AQI 37
Mendocino County
AQI 19
Merced County
AQI 98
Modoc County
AQI 5
Mono County
AQI 6
Monterey County
AQI 47
Napa County
AQI 11
Nevada County
AQI 9
Orange County
AQI 33
Placer County
AQI 36
Plumas County
AQI 5
Riverside County
AQI 34
Sacramento County
AQI 46
San Benito County
AQI 35
San Bernardino County
AQI 30
San Diego County
AQI 55
San Francisco County
AQI 21
San Joaquin County
AQI 85
San Luis Obispo County
AQI 58
San Mateo County
AQI 32
Santa Barbara County
AQI 32
Santa Clara County
AQI 35
Santa Cruz County
AQI 35
Shasta County
AQI 55
Sierra County
AQI 5
Siskiyou County
AQI 21
Solano County
AQI 53
Sonoma County
AQI 22
Stanislaus County
AQI 94
Sutter County
AQI 58
Tehama County
AQI 55
Trinity County
AQI 6
Tulare County
AQI 86
Tuolumne County
AQI 22
Ventura County
AQI 27
Yolo County
AQI 47
Yuba County
AQI 58
Data Sources
http://www.airnow.gov/

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