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Colorado

United States

2026-09-18 00:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
72.9
PM10
μg/m³
16.9
NO2
μg/m³
11.1
PM2.5
μg/m³
3.5
CO
μg/m³
291.7
SO2
μg/m³
1
Weather
  • ℃
  • ℉
9℃
94%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • CO
  • SO2
Places included
Adams County
AQI 28
Alamosa County
AQI 13
Arapahoe County
AQI 28
Archuleta County
AQI 22
Baca County
AQI 17
Bent County
AQI 20
Boulder County
AQI 23
Broomfield County
AQI 28
Chaffee County
AQI 2
Cheyenne County
AQI 10
Clear Creek County
AQI 25
Conejos County
AQI 13
Costilla County
AQI 6
Crowley County
AQI 19
Custer County
AQI 5
Delta County
AQI 6
Denver County
AQI 28
Dolores County
AQI 3
Douglas County
AQI 28
Eagle County
AQI 3
El Paso County
AQI 30
Elbert County
AQI 18
Fremont County
AQI 16
Garfield County
AQI 18
Gilpin County
AQI 20
Grand County
AQI 2
Gunnison County
AQI 22
Hinsdale County
AQI 7
Huerfano County
AQI 6
Jackson County
AQI 4
Jefferson County
AQI 25
La Plata County
AQI 21
Lake County
AQI 1
Larimer County
AQI 25
Las Animas County
AQI 14
Lincoln County
AQI 7
Logan County
AQI 9
Mesa County
AQI 19
Mineral County
AQI 8
Moffat County
AQI 2
Montezuma County
AQI 27
Montrose County
AQI 6
Morgan County
AQI 6
Otero County
AQI 32
Ouray County
AQI 12
Park County
AQI 2
Phillips County
AQI 15
Pitkin County
AQI 13
Prowers County
AQI 49
Pueblo County
AQI 29
Rio Blanco County
AQI 2
Rio Grande County
AQI 13
Routt County
AQI 9
Saguache County
AQI 5
San Juan County
AQI 12
San Miguel County
AQI 12
Sedgwick County
AQI 12
Summit County
AQI 3
Teller County
AQI 5
Washington County
AQI 8
Weld County
AQI 30
Yuma County
AQI 14
Data Sources
http://www.airnow.gov/

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