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California

United States

2026-01-01 12:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
8.2
O3
μg/m³
36
PM10
μg/m³
6.7
NO2
μg/m³
10.3
CO
μg/m³
290.4
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
11℃
100%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 15
Alpine County
AQI 50
Amador County
AQI 23
Butte County
AQI 42
Calaveras County
AQI 22
Colusa County
AQI 31
Contra Costa County
AQI 19
Del Norte County
AQI 34
El Dorado County
AQI 45
Fresno County
AQI 53
Glenn County
AQI 31
Humboldt County
AQI 45
Imperial County
AQI 41
Inyo County
AQI 25
Kern County
AQI 24
Kings County
AQI 59
Lake County
AQI 52
Lassen County
AQI 167
Los Angeles County
AQI 23
Madera County
AQI 21
Marin County
AQI 18
Mariposa County
AQI 30
Mendocino County
AQI 51
Merced County
AQI 22
Modoc County
AQI 7
Mono County
AQI 20
Monterey County
AQI 18
Napa County
AQI 17
Nevada County
AQI 39
Orange County
AQI 21
Placer County
AQI 49
Plumas County
AQI 95
Riverside County
AQI 34
Sacramento County
AQI 57
San Benito County
AQI 25
San Bernardino County
AQI 25
San Diego County
AQI 26
San Francisco County
AQI 14
San Joaquin County
AQI 32
San Luis Obispo County
AQI 23
San Mateo County
AQI 26
Santa Barbara County
AQI 25
Santa Clara County
AQI 43
Santa Cruz County
AQI 40
Shasta County
AQI 67
Sierra County
AQI 48
Siskiyou County
AQI 69
Solano County
AQI 27
Sonoma County
AQI 22
Stanislaus County
AQI 38
Sutter County
AQI 36
Tehama County
AQI 56
Trinity County
AQI 60
Tulare County
AQI 48
Tuolumne County
AQI 33
Ventura County
AQI 24
Yolo County
AQI 42
Yuba County
AQI 32
Data Sources
http://www.airnow.gov/

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