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California

United States

2026-10-18 13:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
24.8
O3
μg/m³
43.5
NO2
μg/m³
20.9
PM2.5
μg/m³
5.4
CO
μg/m³
484.4
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
17℃
39%
10 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 12
Alpine County
AQI 5
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 2
El Dorado County
AQI 21
Fresno County
AQI 48
Glenn County
AQI 12
Humboldt County
AQI 16
Imperial County
AQI 38
Inyo County
AQI 19
Kern County
AQI 23
Kings County
AQI 72
Lake County
AQI 12
Lassen County
AQI 15
Los Angeles County
AQI 29
Madera County
AQI 23
Marin County
AQI 10
Mariposa County
AQI 30
Mendocino County
AQI 12
Merced County
AQI 63
Modoc County
AQI 6
Mono County
AQI 5
Monterey County
AQI 25
Napa County
AQI 3
Nevada County
AQI 3
Orange County
AQI 36
Placer County
AQI 22
Plumas County
AQI 8
Riverside County
AQI 29
Sacramento County
AQI 18
San Benito County
AQI 19
San Bernardino County
AQI 28
San Diego County
AQI 27
San Francisco County
AQI 15
San Joaquin County
AQI 37
San Luis Obispo County
AQI 27
San Mateo County
AQI 14
Santa Barbara County
AQI 40
Santa Clara County
AQI 19
Santa Cruz County
AQI 19
Shasta County
AQI 19
Sierra County
AQI 1
Siskiyou County
AQI 14
Solano County
AQI 17
Sonoma County
AQI 4
Stanislaus County
AQI 34
Sutter County
AQI 22
Tehama County
AQI 28
Trinity County
AQI 12
Tulare County
AQI 36
Tuolumne County
AQI 22
Ventura County
AQI 23
Yolo County
AQI 19
Yuba County
AQI 19
Data Sources
http://www.airnow.gov/

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