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California

United States

2026-10-17 09:00
AQI (US)
Good
Pollutants|Pollens
PM10
μg/m³
45
PM2.5
μg/m³
7.4
O3
μg/m³
57.1
NO2
μg/m³
27.1
CO
μg/m³
617.2
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
17℃
30%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM10
  • PM2.5
  • O3
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 50
Alpine County
AQI 8
Amador County
AQI 34
Butte County
AQI 28
Calaveras County
AQI 33
Colusa County
AQI 56
Contra Costa County
AQI 56
Del Norte County
AQI 23
El Dorado County
AQI 25
Fresno County
AQI 72
Glenn County
AQI 25
Humboldt County
AQI 18
Imperial County
AQI 76
Inyo County
AQI 30
Kern County
AQI 53
Kings County
AQI 74
Lake County
AQI 50
Lassen County
AQI 64
Los Angeles County
AQI 54
Madera County
AQI 56
Marin County
AQI 19
Mariposa County
AQI 53
Mendocino County
AQI 50
Merced County
AQI 54
Modoc County
AQI 20
Mono County
AQI 7
Monterey County
AQI 77
Napa County
AQI 61
Nevada County
AQI 34
Orange County
AQI 28
Placer County
AQI 34
Plumas County
AQI 52
Riverside County
AQI 40
Sacramento County
AQI 49
San Benito County
AQI 34
San Bernardino County
AQI 28
San Diego County
AQI 73
San Francisco County
AQI 39
San Joaquin County
AQI 56
San Luis Obispo County
AQI 41
San Mateo County
AQI 39
Santa Barbara County
AQI 27
Santa Clara County
AQI 50
Santa Cruz County
AQI 34
Shasta County
AQI 57
Sierra County
AQI 52
Siskiyou County
AQI 37
Solano County
AQI 52
Sonoma County
AQI 55
Stanislaus County
AQI 58
Sutter County
AQI 40
Tehama County
AQI 57
Trinity County
AQI 54
Tulare County
AQI 58
Tuolumne County
AQI 31
Ventura County
AQI 35
Yolo County
AQI 44
Yuba County
AQI 35
Data Sources
http://www.airnow.gov/

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