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California

United States

2026-03-12 12:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
15.1
PM2.5
μg/m³
8.2
NO2
μg/m³
22
O3
μg/m³
33
CO
μg/m³
497.4
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
12℃
73%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • PM2.5
  • NO2
  • O3
  • CO
  • SO2
Places included
Alameda County
AQI 14
Alpine County
AQI 59
Amador County
AQI 7
Butte County
AQI 21
Calaveras County
AQI 7
Colusa County
AQI 11
Contra Costa County
AQI 24
Del Norte County
AQI 9
El Dorado County
AQI 17
Fresno County
AQI 48
Glenn County
AQI 7
Humboldt County
AQI 10
Imperial County
AQI 20
Inyo County
AQI 19
Kern County
AQI 22
Kings County
AQI 31
Lake County
AQI 45
Lassen County
AQI 9
Los Angeles County
AQI 21
Madera County
AQI 10
Marin County
AQI 9
Mariposa County
AQI 25
Mendocino County
AQI 37
Merced County
AQI 17
Modoc County
AQI 2
Mono County
AQI 6
Monterey County
AQI 17
Napa County
AQI 4
Nevada County
AQI 6
Orange County
AQI 24
Placer County
AQI 9
Plumas County
AQI 12
Riverside County
AQI 24
Sacramento County
AQI 17
San Benito County
AQI 13
San Bernardino County
AQI 37
San Diego County
AQI 22
San Francisco County
AQI 26
San Joaquin County
AQI 18
San Luis Obispo County
AQI 19
San Mateo County
AQI 10
Santa Barbara County
AQI 15
Santa Clara County
AQI 15
Santa Cruz County
AQI 13
Shasta County
AQI 19
Sierra County
AQI 14
Siskiyou County
AQI 9
Solano County
AQI 12
Sonoma County
AQI 7
Stanislaus County
AQI 28
Sutter County
AQI 17
Tehama County
AQI 11
Trinity County
AQI 6
Tulare County
AQI 31
Tuolumne County
AQI 12
Ventura County
AQI 17
Yolo County
AQI 23
Yuba County
AQI 13
Data Sources
http://www.airnow.gov/

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