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California

United States

2026-10-19 00:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
101.3
PM10
μg/m³
29.3
PM2.5
μg/m³
5.6
CO
μg/m³
328.8
NO2
μg/m³
6.1
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
29℃
21%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • CO
  • NO2
  • SO2
Places included
Alameda County
AQI 22
Alpine County
AQI 4
Amador County
AQI 33
Butte County
AQI 32
Calaveras County
AQI 32
Colusa County
AQI 57
Contra Costa County
AQI 24
Del Norte County
AQI 2
El Dorado County
AQI 29
Fresno County
AQI 41
Glenn County
AQI 35
Humboldt County
AQI 19
Imperial County
AQI 36
Inyo County
AQI 32
Kern County
AQI 37
Kings County
AQI 45
Lake County
AQI 11
Lassen County
AQI 4
Los Angeles County
AQI 48
Madera County
AQI 42
Marin County
AQI 20
Mariposa County
AQI 37
Mendocino County
AQI 11
Merced County
AQI 43
Modoc County
AQI 5
Mono County
AQI 5
Monterey County
AQI 73
Napa County
AQI 11
Nevada County
AQI 6
Orange County
AQI 55
Placer County
AQI 32
Plumas County
AQI 3
Riverside County
AQI 35
Sacramento County
AQI 28
San Benito County
AQI 35
San Bernardino County
AQI 34
San Diego County
AQI 54
San Francisco County
AQI 19
San Joaquin County
AQI 27
San Luis Obispo County
AQI 35
San Mateo County
AQI 19
Santa Barbara County
AQI 45
Santa Clara County
AQI 35
Santa Cruz County
AQI 35
Shasta County
AQI 46
Sierra County
AQI 6
Siskiyou County
AQI 33
Solano County
AQI 24
Sonoma County
AQI 22
Stanislaus County
AQI 42
Sutter County
AQI 30
Tehama County
AQI 46
Trinity County
AQI 3
Tulare County
AQI 41
Tuolumne County
AQI 39
Ventura County
AQI 42
Yolo County
AQI 30
Yuba County
AQI 32
Data Sources
http://www.airnow.gov/

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