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California

United States

2026-10-18 09:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
33.9
O3
μg/m³
49.3
NO2
μg/m³
24
PM2.5
μg/m³
7.1
CO
μg/m³
575.5
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
18℃
33%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 18
Alpine County
AQI 3
Amador County
AQI 14
Butte County
AQI 23
Calaveras County
AQI 24
Colusa County
AQI 73
Contra Costa County
AQI 56
Del Norte County
AQI 7
El Dorado County
AQI 20
Fresno County
AQI 64
Glenn County
AQI 15
Humboldt County
AQI 7
Imperial County
AQI 42
Inyo County
AQI 20
Kern County
AQI 27
Kings County
AQI 74
Lake County
AQI 11
Lassen County
AQI 14
Los Angeles County
AQI 39
Madera County
AQI 41
Marin County
AQI 14
Mariposa County
AQI 30
Mendocino County
AQI 12
Merced County
AQI 72
Modoc County
AQI 6
Mono County
AQI 5
Monterey County
AQI 28
Napa County
AQI 10
Nevada County
AQI 2
Orange County
AQI 36
Placer County
AQI 23
Plumas County
AQI 7
Riverside County
AQI 51
Sacramento County
AQI 27
San Benito County
AQI 19
San Bernardino County
AQI 30
San Diego County
AQI 35
San Francisco County
AQI 18
San Joaquin County
AQI 44
San Luis Obispo County
AQI 37
San Mateo County
AQI 28
Santa Barbara County
AQI 45
Santa Clara County
AQI 27
Santa Cruz County
AQI 23
Shasta County
AQI 30
Sierra County
AQI 6
Siskiyou County
AQI 14
Solano County
AQI 42
Sonoma County
AQI 8
Stanislaus County
AQI 56
Sutter County
AQI 31
Tehama County
AQI 30
Trinity County
AQI 6
Tulare County
AQI 61
Tuolumne County
AQI 23
Ventura County
AQI 44
Yolo County
AQI 34
Yuba County
AQI 31
Data Sources
http://www.airnow.gov/

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