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California

United States

2026-10-18 20:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
97.4
PM10
μg/m³
30.2
PM2.5
μg/m³
6.4
NO2
μg/m³
7
CO
μg/m³
313.2
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
33℃
21%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 30
Alpine County
AQI 30
Amador County
AQI 33
Butte County
AQI 39
Calaveras County
AQI 32
Colusa County
AQI 48
Contra Costa County
AQI 34
Del Norte County
AQI 9
El Dorado County
AQI 28
Fresno County
AQI 51
Glenn County
AQI 33
Humboldt County
AQI 19
Imperial County
AQI 32
Inyo County
AQI 29
Kern County
AQI 35
Kings County
AQI 61
Lake County
AQI 4
Lassen County
AQI 4
Los Angeles County
AQI 37
Madera County
AQI 38
Marin County
AQI 19
Mariposa County
AQI 33
Mendocino County
AQI 14
Merced County
AQI 47
Modoc County
AQI 4
Mono County
AQI 6
Monterey County
AQI 27
Napa County
AQI 12
Nevada County
AQI 5
Orange County
AQI 51
Placer County
AQI 32
Plumas County
AQI 2
Riverside County
AQI 32
Sacramento County
AQI 35
San Benito County
AQI 32
San Bernardino County
AQI 32
San Diego County
AQI 34
San Francisco County
AQI 17
San Joaquin County
AQI 34
San Luis Obispo County
AQI 42
San Mateo County
AQI 18
Santa Barbara County
AQI 70
Santa Clara County
AQI 29
Santa Cruz County
AQI 30
Shasta County
AQI 38
Sierra County
AQI 5
Siskiyou County
AQI 25
Solano County
AQI 23
Sonoma County
AQI 17
Stanislaus County
AQI 47
Sutter County
AQI 39
Tehama County
AQI 38
Trinity County
AQI 5
Tulare County
AQI 46
Tuolumne County
AQI 35
Ventura County
AQI 42
Yolo County
AQI 33
Yuba County
AQI 39
Data Sources
http://www.airnow.gov/

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