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California

United States

2025-12-14 22:00
AQI (China)
Excellent
Pollutants|Pollens
PM2.5
μg/m³
9.7
PM10
μg/m³
13.5
O3
μg/m³
39.8
NO2
μg/m³
15.1
CO
μg/m³
516.3
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
23℃
32%
5 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 15
Alpine County
AQI 12
Amador County
AQI 7
Butte County
AQI 14
Calaveras County
AQI 7
Colusa County
AQI 5
Contra Costa County
AQI 12
Del Norte County
AQI 7
El Dorado County
AQI 20
Fresno County
AQI 18
Glenn County
AQI 10
Humboldt County
AQI 19
Imperial County
AQI 25
Inyo County
AQI 22
Kern County
AQI 10
Kings County
AQI 12
Lake County
AQI 15
Lassen County
AQI 10
Los Angeles County
AQI 32
Madera County
AQI 24
Marin County
AQI 7
Mariposa County
AQI 29
Mendocino County
AQI 14
Merced County
AQI 14
Modoc County
AQI 2
Mono County
AQI 3
Monterey County
AQI 17
Napa County
AQI 4
Nevada County
AQI 9
Orange County
AQI 76
Placer County
AQI 14
Plumas County
AQI 13
Riverside County
AQI 28
Sacramento County
AQI 14
San Benito County
AQI 20
San Bernardino County
AQI 38
San Diego County
AQI 34
San Francisco County
AQI 18
San Joaquin County
AQI 20
San Luis Obispo County
AQI 22
San Mateo County
AQI 19
Santa Barbara County
AQI 16
Santa Clara County
AQI 24
Santa Cruz County
AQI 19
Shasta County
AQI 28
Sierra County
AQI 14
Siskiyou County
AQI 21
Solano County
AQI 8
Sonoma County
AQI 8
Stanislaus County
AQI 29
Sutter County
AQI 9
Tehama County
AQI 28
Trinity County
AQI 12
Tulare County
AQI 13
Tuolumne County
AQI 18
Ventura County
AQI 24
Yolo County
AQI 14
Yuba County
AQI 9
Data Sources
http://www.airnow.gov/

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