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California

United States

2026-10-18 13:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
25.4
O3
μg/m³
44.9
NO2
μg/m³
19
PM2.5
μg/m³
5.8
CO
μg/m³
416
SO2
μg/m³
1.2
Weather
  • ℃
  • ℉
17℃
37%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 13
Alpine County
AQI 4
Amador County
AQI 10
Butte County
AQI 21
Calaveras County
AQI 22
Colusa County
AQI 58
Contra Costa County
AQI 52
Del Norte County
AQI 5
El Dorado County
AQI 21
Fresno County
AQI 48
Glenn County
AQI 12
Humboldt County
AQI 19
Imperial County
AQI 39
Inyo County
AQI 20
Kern County
AQI 23
Kings County
AQI 72
Lake County
AQI 14
Lassen County
AQI 15
Los Angeles County
AQI 31
Madera County
AQI 23
Marin County
AQI 8
Mariposa County
AQI 30
Mendocino County
AQI 14
Merced County
AQI 63
Modoc County
AQI 6
Mono County
AQI 6
Monterey County
AQI 34
Napa County
AQI 3
Nevada County
AQI 5
Orange County
AQI 36
Placer County
AQI 22
Plumas County
AQI 8
Riverside County
AQI 34
Sacramento County
AQI 19
San Benito County
AQI 19
San Bernardino County
AQI 27
San Diego County
AQI 26
San Francisco County
AQI 16
San Joaquin County
AQI 37
San Luis Obispo County
AQI 31
San Mateo County
AQI 11
Santa Barbara County
AQI 34
Santa Clara County
AQI 19
Santa Cruz County
AQI 21
Shasta County
AQI 19
Sierra County
AQI 4
Siskiyou County
AQI 12
Solano County
AQI 20
Sonoma County
AQI 4
Stanislaus County
AQI 34
Sutter County
AQI 22
Tehama County
AQI 27
Trinity County
AQI 10
Tulare County
AQI 36
Tuolumne County
AQI 22
Ventura County
AQI 22
Yolo County
AQI 20
Yuba County
AQI 19
Data Sources
http://www.airnow.gov/

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