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California

United States

2025-12-18 01:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
10.4
PM10
μg/m³
22.4
O3
μg/m³
37.4
NO2
μg/m³
23.7
CO
μg/m³
486.1
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
7℃
100%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 21
Alpine County
AQI 34
Amador County
AQI 16
Butte County
AQI 30
Calaveras County
AQI 15
Colusa County
AQI 15
Contra Costa County
AQI 23
Del Norte County
AQI 50
El Dorado County
AQI 15
Fresno County
AQI 62
Glenn County
AQI 17
Humboldt County
AQI 36
Imperial County
AQI 64
Inyo County
AQI 32
Kern County
AQI 54
Kings County
AQI 67
Lake County
AQI 29
Lassen County
AQI 66
Los Angeles County
AQI 81
Madera County
AQI 72
Marin County
AQI 26
Mariposa County
AQI 22
Mendocino County
AQI 21
Merced County
AQI 66
Modoc County
AQI 5
Mono County
AQI 7
Monterey County
AQI 15
Napa County
AQI 19
Nevada County
AQI 22
Orange County
AQI 99
Placer County
AQI 18
Plumas County
AQI 85
Riverside County
AQI 58
Sacramento County
AQI 52
San Benito County
AQI 32
San Bernardino County
AQI 57
San Diego County
AQI 76
San Francisco County
AQI 23
San Joaquin County
AQI 55
San Luis Obispo County
AQI 42
San Mateo County
AQI 23
Santa Barbara County
AQI 29
Santa Clara County
AQI 26
Santa Cruz County
AQI 38
Shasta County
AQI 59
Sierra County
AQI 99
Siskiyou County
AQI 35
Solano County
AQI 48
Sonoma County
AQI 26
Stanislaus County
AQI 77
Sutter County
AQI 60
Tehama County
AQI 58
Trinity County
AQI 71
Tulare County
AQI 60
Tuolumne County
AQI 20
Ventura County
AQI 41
Yolo County
AQI 52
Yuba County
AQI 59
Data Sources
http://www.airnow.gov/

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