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Colorado

United States

2026-09-18 17:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
42.8
O3
μg/m³
58.1
NO2
μg/m³
19.6
PM2.5
μg/m³
5.9
CO
μg/m³
354.2
SO2
μg/m³
4.5
Weather
  • ℃
  • ℉
12℃
58%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 100
Alamosa County
AQI 10
Arapahoe County
AQI 100
Archuleta County
AQI 20
Baca County
AQI 11
Bent County
AQI 13
Boulder County
AQI 21
Broomfield County
AQI 100
Chaffee County
AQI 1
Cheyenne County
AQI 12
Clear Creek County
AQI 27
Conejos County
AQI 10
Costilla County
AQI 3
Crowley County
AQI 7
Custer County
AQI 3
Delta County
AQI 17
Denver County
AQI 100
Dolores County
AQI 1
Douglas County
AQI 100
Eagle County
AQI 1
El Paso County
AQI 28
Elbert County
AQI 29
Fremont County
AQI 9
Garfield County
AQI 10
Gilpin County
AQI 25
Grand County
AQI 2
Gunnison County
AQI 15
Hinsdale County
AQI 8
Huerfano County
AQI 1
Jackson County
AQI 2
Jefferson County
AQI 88
La Plata County
AQI 23
Lake County
AQI 1
Larimer County
AQI 24
Las Animas County
AQI 4
Lincoln County
AQI 4
Logan County
AQI 3
Mesa County
AQI 15
Mineral County
AQI 3
Moffat County
AQI 2
Montezuma County
AQI 24
Montrose County
AQI 17
Morgan County
AQI 8
Otero County
AQI 11
Ouray County
AQI 16
Park County
AQI 2
Phillips County
AQI 2
Pitkin County
AQI 3
Prowers County
AQI 11
Pueblo County
AQI 28
Rio Blanco County
AQI 1
Rio Grande County
AQI 10
Routt County
AQI 14
Saguache County
AQI 3
San Juan County
AQI 16
San Miguel County
AQI 16
Sedgwick County
AQI 3
Summit County
AQI 6
Teller County
AQI 4
Washington County
AQI 4
Weld County
AQI 75
Yuma County
AQI 3
Data Sources
http://www.airnow.gov/

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