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California

United States

2026-10-18 17:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
28.7
O3
μg/m³
66.3
PM2.5
μg/m³
6.2
NO2
μg/m³
11.7
CO
μg/m³
395.8
SO2
μg/m³
1.5
Weather
  • ℃
  • ℉
29℃
26%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • CO
  • SO2
Places included
Alameda County
AQI 24
Alpine County
AQI 20
Amador County
AQI 18
Butte County
AQI 24
Calaveras County
AQI 23
Colusa County
AQI 34
Contra Costa County
AQI 53
Del Norte County
AQI 3
El Dorado County
AQI 22
Fresno County
AQI 60
Glenn County
AQI 18
Humboldt County
AQI 11
Imperial County
AQI 26
Inyo County
AQI 23
Kern County
AQI 32
Kings County
AQI 80
Lake County
AQI 9
Lassen County
AQI 6
Los Angeles County
AQI 30
Madera County
AQI 36
Marin County
AQI 15
Mariposa County
AQI 30
Mendocino County
AQI 10
Merced County
AQI 51
Modoc County
AQI 3
Mono County
AQI 7
Monterey County
AQI 23
Napa County
AQI 7
Nevada County
AQI 13
Orange County
AQI 42
Placer County
AQI 27
Plumas County
AQI 3
Riverside County
AQI 26
Sacramento County
AQI 26
San Benito County
AQI 24
San Bernardino County
AQI 26
San Diego County
AQI 28
San Francisco County
AQI 18
San Joaquin County
AQI 44
San Luis Obispo County
AQI 33
San Mateo County
AQI 14
Santa Barbara County
AQI 60
Santa Clara County
AQI 20
Santa Cruz County
AQI 25
Shasta County
AQI 28
Sierra County
AQI 3
Siskiyou County
AQI 15
Solano County
AQI 25
Sonoma County
AQI 8
Stanislaus County
AQI 50
Sutter County
AQI 27
Tehama County
AQI 28
Trinity County
AQI 9
Tulare County
AQI 37
Tuolumne County
AQI 27
Ventura County
AQI 28
Yolo County
AQI 22
Yuba County
AQI 27
Data Sources
http://www.airnow.gov/

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