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California

United States

2026-01-20 08:00
AQI (China)
Excellent
Pollutants|Pollens
PM2.5
μg/m³
11
NO2
μg/m³
26.5
PM10
μg/m³
12.9
O3
μg/m³
25.1
CO
μg/m³
698.8
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
7℃
100%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM2.5
  • NO2
  • PM10
  • O3
  • CO
  • SO2
Places included
Alameda County
AQI 21
Alpine County
AQI 30
Amador County
AQI 11
Butte County
AQI 19
Calaveras County
AQI 11
Colusa County
AQI 16
Contra Costa County
AQI 19
Del Norte County
AQI 12
El Dorado County
AQI 11
Fresno County
AQI 12
Glenn County
AQI 12
Humboldt County
AQI 12
Imperial County
AQI 34
Inyo County
AQI 15
Kern County
AQI 17
Kings County
AQI 18
Lake County
AQI 31
Lassen County
AQI 5
Los Angeles County
AQI 33
Madera County
AQI 18
Marin County
AQI 15
Mariposa County
AQI 25
Mendocino County
AQI 34
Merced County
AQI 15
Modoc County
AQI 2
Mono County
AQI 26
Monterey County
AQI 9
Napa County
AQI 15
Nevada County
AQI 14
Orange County
AQI 30
Placer County
AQI 11
Plumas County
AQI 28
Riverside County
AQI 21
Sacramento County
AQI 9
San Benito County
AQI 8
San Bernardino County
AQI 34
San Diego County
AQI 21
San Francisco County
AQI 28
San Joaquin County
AQI 15
San Luis Obispo County
AQI 17
San Mateo County
AQI 19
Santa Barbara County
AQI 14
Santa Clara County
AQI 23
Santa Cruz County
AQI 15
Shasta County
AQI 23
Sierra County
AQI 44
Siskiyou County
AQI 41
Solano County
AQI 13
Sonoma County
AQI 17
Stanislaus County
AQI 17
Sutter County
AQI 18
Tehama County
AQI 23
Trinity County
AQI 13
Tulare County
AQI 16
Tuolumne County
AQI 6
Ventura County
AQI 17
Yolo County
AQI 19
Yuba County
AQI 15
Data Sources
http://www.airnow.gov/

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