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  3. California

California

United States

2026-10-17 14:00
AQI (India)
Good
Pollutants|Pollens
O3
μg/m³
44.5
PM10
μg/m³
34.6
NO2
μg/m³
27.2
CO
μg/m³
591.8
PM2.5
μg/m³
5.7
SO2
μg/m³
1.3
Weather
  • ℃
  • ℉
15℃
48%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • PM10
  • NO2
  • CO
  • PM2.5
  • SO2
Places included
Alameda County
AQI 52
Alpine County
AQI 7
Amador County
AQI 22
Butte County
AQI 56
Calaveras County
AQI 60
Colusa County
AQI 46
Contra Costa County
AQI 72
Del Norte County
AQI 4
El Dorado County
AQI 57
Fresno County
AQI 55
Glenn County
AQI 28
Humboldt County
AQI 11
Imperial County
AQI 61
Inyo County
AQI 61
Kern County
AQI 52
Kings County
AQI 76
Lake County
AQI 14
Lassen County
AQI 36
Los Angeles County
AQI 53
Madera County
AQI 25
Marin County
AQI 53
Mariposa County
AQI 98
Mendocino County
AQI 14
Merced County
AQI 51
Modoc County
AQI 7
Mono County
AQI 6
Monterey County
AQI 52
Napa County
AQI 10
Nevada County
AQI 11
Orange County
AQI 55
Placer County
AQI 57
Plumas County
AQI 5
Riverside County
AQI 68
Sacramento County
AQI 42
San Benito County
AQI 58
San Bernardino County
AQI 59
San Diego County
AQI 89
San Francisco County
AQI 65
San Joaquin County
AQI 53
San Luis Obispo County
AQI 51
San Mateo County
AQI 35
Santa Barbara County
AQI 50
Santa Clara County
AQI 62
Santa Cruz County
AQI 53
Shasta County
AQI 60
Sierra County
AQI 5
Siskiyou County
AQI 35
Solano County
AQI 52
Sonoma County
AQI 19
Stanislaus County
AQI 46
Sutter County
AQI 74
Tehama County
AQI 86
Trinity County
AQI 9
Tulare County
AQI 65
Tuolumne County
AQI 71
Ventura County
AQI 73
Yolo County
AQI 30
Yuba County
AQI 40
Data Sources
http://www.airnow.gov/

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