1. North America
  2. United States
  3. Colorado

Colorado

United States

2025-12-19 12:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
4.6
O3
μg/m³
53.7
NO2
μg/m³
31.5
PM10
μg/m³
15.4
CO
μg/m³
291.7
SO2
μg/m³
3.7
Weather
  • ℃
  • ℉
-5℃
52%
24 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • NO2
  • PM10
  • CO
  • SO2
Places included
Adams County
AQI 40
Alamosa County
AQI 58
Arapahoe County
AQI 33
Archuleta County
AQI 20
Baca County
AQI 25
Bent County
AQI 20
Boulder County
AQI 38
Broomfield County
AQI 37
Chaffee County
AQI 24
Cheyenne County
AQI 22
Clear Creek County
AQI 19
Conejos County
AQI 58
Costilla County
AQI 30
Crowley County
AQI 20
Custer County
AQI 24
Delta County
AQI 43
Denver County
AQI 23
Dolores County
AQI 33
Douglas County
AQI 33
Eagle County
AQI 35
El Paso County
AQI 26
Elbert County
AQI 28
Fremont County
AQI 9
Garfield County
AQI 23
Gilpin County
AQI 39
Grand County
AQI 26
Gunnison County
AQI 38
Hinsdale County
AQI 29
Huerfano County
AQI 20
Jackson County
AQI 26
Jefferson County
AQI 41
La Plata County
AQI 25
Lake County
AQI 35
Larimer County
AQI 27
Las Animas County
AQI 20
Lincoln County
AQI 21
Logan County
AQI 51
Mesa County
AQI 57
Mineral County
AQI 29
Moffat County
AQI 28
Montezuma County
AQI 24
Montrose County
AQI 43
Morgan County
AQI 33
Otero County
AQI 24
Ouray County
AQI 7
Park County
AQI 19
Phillips County
AQI 51
Pitkin County
AQI 31
Prowers County
AQI 18
Pueblo County
AQI 24
Rio Blanco County
AQI 39
Rio Grande County
AQI 58
Routt County
AQI 18
Saguache County
AQI 24
San Juan County
AQI 7
San Miguel County
AQI 7
Sedgwick County
AQI 51
Summit County
AQI 35
Teller County
AQI 24
Washington County
AQI 51
Weld County
AQI 21
Yuma County
AQI 51
Data Sources
http://www.airnow.gov/

Get the App

Scan QR Code
Air Matters
Realtime broadcasting air quality information on your phone for more than 180 countries.

iPhone, iPad

Android

Cities Nearby

Keystone
AQI 19
Georgetown
AQI 19
Breckenridge
AQI 35
Silverthorne
AQI 35
Frisco
AQI 35
Wildernest
AQI 35
Bailey
AQI 19
Idaho Springs
AQI 19
Copper Mountain
AQI 35
Black Hawk
AQI 39
Winter Park
AQI 19