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California

United States

2026-10-18 02:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
41.5
O3
μg/m³
93.3
NO2
μg/m³
20.1
PM2.5
μg/m³
5.5
CO
μg/m³
451.8
SO2
μg/m³
1.7
Weather
  • ℃
  • ℉
23℃
31%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 42
Alpine County
AQI 5
Amador County
AQI 30
Butte County
AQI 55
Calaveras County
AQI 39
Colusa County
AQI 64
Contra Costa County
AQI 45
Del Norte County
AQI 8
El Dorado County
AQI 32
Fresno County
AQI 41
Glenn County
AQI 26
Humboldt County
AQI 15
Imperial County
AQI 59
Inyo County
AQI 28
Kern County
AQI 30
Kings County
AQI 79
Lake County
AQI 1
Lassen County
AQI 26
Los Angeles County
AQI 57
Madera County
AQI 54
Marin County
AQI 29
Mariposa County
AQI 36
Mendocino County
AQI 23
Merced County
AQI 66
Modoc County
AQI 8
Mono County
AQI 4
Monterey County
AQI 47
Napa County
AQI 9
Nevada County
AQI 4
Orange County
AQI 44
Placer County
AQI 29
Plumas County
AQI 6
Riverside County
AQI 49
Sacramento County
AQI 34
San Benito County
AQI 33
San Bernardino County
AQI 34
San Diego County
AQI 56
San Francisco County
AQI 19
San Joaquin County
AQI 53
San Luis Obispo County
AQI 36
San Mateo County
AQI 26
Santa Barbara County
AQI 59
Santa Clara County
AQI 34
Santa Cruz County
AQI 30
Shasta County
AQI 31
Sierra County
AQI 10
Siskiyou County
AQI 18
Solano County
AQI 45
Sonoma County
AQI 21
Stanislaus County
AQI 61
Sutter County
AQI 60
Tehama County
AQI 34
Trinity County
AQI 5
Tulare County
AQI 47
Tuolumne County
AQI 31
Ventura County
AQI 59
Yolo County
AQI 37
Yuba County
AQI 58
Data Sources
http://www.airnow.gov/

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