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California

United States

2026-10-18 00:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
36
O3
μg/m³
111.5
PM2.5
μg/m³
4.9
NO2
μg/m³
10.8
CO
μg/m³
357.4
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
28℃
23%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 34
Alpine County
AQI 3
Amador County
AQI 37
Butte County
AQI 55
Calaveras County
AQI 37
Colusa County
AQI 56
Contra Costa County
AQI 47
Del Norte County
AQI 9
El Dorado County
AQI 33
Fresno County
AQI 38
Glenn County
AQI 38
Humboldt County
AQI 15
Imperial County
AQI 35
Inyo County
AQI 30
Kern County
AQI 36
Kings County
AQI 42
Lake County
AQI 6
Lassen County
AQI 20
Los Angeles County
AQI 54
Madera County
AQI 37
Marin County
AQI 43
Mariposa County
AQI 35
Mendocino County
AQI 24
Merced County
AQI 55
Modoc County
AQI 8
Mono County
AQI 7
Monterey County
AQI 80
Napa County
AQI 10
Nevada County
AQI 4
Orange County
AQI 47
Placer County
AQI 34
Plumas County
AQI 5
Riverside County
AQI 49
Sacramento County
AQI 41
San Benito County
AQI 35
San Bernardino County
AQI 31
San Diego County
AQI 59
San Francisco County
AQI 23
San Joaquin County
AQI 49
San Luis Obispo County
AQI 33
San Mateo County
AQI 31
Santa Barbara County
AQI 60
Santa Clara County
AQI 41
Santa Cruz County
AQI 33
Shasta County
AQI 37
Sierra County
AQI 9
Siskiyou County
AQI 30
Solano County
AQI 47
Sonoma County
AQI 32
Stanislaus County
AQI 59
Sutter County
AQI 39
Tehama County
AQI 37
Trinity County
AQI 2
Tulare County
AQI 55
Tuolumne County
AQI 33
Ventura County
AQI 44
Yolo County
AQI 41
Yuba County
AQI 39
Data Sources
http://www.airnow.gov/

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