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California

United States

2026-10-17 17:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
49
O3
μg/m³
68
NO2
μg/m³
21.2
PM2.5
μg/m³
6.8
CO
μg/m³
487
SO2
μg/m³
1.8
Weather
  • ℃
  • ℉
30℃
21%
9 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Alameda County
AQI 57
Alpine County
AQI 8
Amador County
AQI 18
Butte County
AQI 46
Calaveras County
AQI 21
Colusa County
AQI 110
Contra Costa County
AQI 40
Del Norte County
AQI 6
El Dorado County
AQI 42
Fresno County
AQI 67
Glenn County
AQI 19
Humboldt County
AQI 10
Imperial County
AQI 71
Inyo County
AQI 24
Kern County
AQI 50
Kings County
AQI 83
Lake County
AQI 7
Lassen County
AQI 13
Los Angeles County
AQI 45
Madera County
AQI 40
Marin County
AQI 21
Mariposa County
AQI 31
Mendocino County
AQI 7
Merced County
AQI 64
Modoc County
AQI 5
Mono County
AQI 5
Monterey County
AQI 55
Napa County
AQI 11
Nevada County
AQI 8
Orange County
AQI 64
Placer County
AQI 38
Plumas County
AQI 4
Riverside County
AQI 64
Sacramento County
AQI 42
San Benito County
AQI 47
San Bernardino County
AQI 39
San Diego County
AQI 86
San Francisco County
AQI 20
San Joaquin County
AQI 53
San Luis Obispo County
AQI 53
San Mateo County
AQI 16
Santa Barbara County
AQI 25
Santa Clara County
AQI 47
Santa Cruz County
AQI 47
Shasta County
AQI 36
Sierra County
AQI 4
Siskiyou County
AQI 21
Solano County
AQI 40
Sonoma County
AQI 12
Stanislaus County
AQI 68
Sutter County
AQI 65
Tehama County
AQI 36
Trinity County
AQI 5
Tulare County
AQI 55
Tuolumne County
AQI 26
Ventura County
AQI 44
Yolo County
AQI 38
Yuba County
AQI 65
Data Sources
http://www.airnow.gov/

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