1. North America
  2. United States
  3. Colorado

Colorado

United States

2026-09-18 10:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
3.6
O3
μg/m³
33.3
PM10
μg/m³
11.7
NO2
μg/m³
17.5
CO
μg/m³
250
SO2
μg/m³
1.4
Weather
  • ℃
  • ℉
5℃
96%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • CO
  • SO2
Places included
Adams County
AQI 26
Alamosa County
AQI 14
Arapahoe County
AQI 25
Archuleta County
AQI 18
Baca County
AQI 44
Bent County
AQI 51
Boulder County
AQI 14
Broomfield County
AQI 26
Chaffee County
AQI 10
Cheyenne County
AQI 36
Clear Creek County
AQI 16
Conejos County
AQI 14
Costilla County
AQI 11
Crowley County
AQI 30
Custer County
AQI 14
Delta County
AQI 21
Denver County
AQI 26
Dolores County
AQI 5
Douglas County
AQI 22
Eagle County
AQI 26
El Paso County
AQI 27
Elbert County
AQI 40
Fremont County
AQI 13
Garfield County
AQI 2
Gilpin County
AQI 21
Grand County
AQI 15
Gunnison County
AQI 15
Hinsdale County
AQI 8
Huerfano County
AQI 12
Jackson County
AQI 18
Jefferson County
AQI 22
La Plata County
AQI 24
Lake County
AQI 9
Larimer County
AQI 23
Las Animas County
AQI 28
Lincoln County
AQI 32
Logan County
AQI 22
Mesa County
AQI 14
Mineral County
AQI 4
Moffat County
AQI 8
Montezuma County
AQI 19
Montrose County
AQI 21
Morgan County
AQI 47
Otero County
AQI 44
Ouray County
AQI 13
Park County
AQI 14
Phillips County
AQI 24
Pitkin County
AQI 2
Prowers County
AQI 47
Pueblo County
AQI 24
Rio Blanco County
AQI 15
Rio Grande County
AQI 14
Routt County
AQI 12
Saguache County
AQI 13
San Juan County
AQI 13
San Miguel County
AQI 13
Sedgwick County
AQI 24
Summit County
AQI 16
Teller County
AQI 21
Washington County
AQI 29
Weld County
AQI 33
Yuma County
AQI 30
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 16
Georgetown
AQI 16
Breckenridge
AQI 16
Silverthorne
AQI 16
Frisco
AQI 16
Wildernest
AQI 17
Bailey
AQI 17
Idaho Springs
AQI 19
Copper Mountain
AQI 15
Black Hawk
AQI 21
Winter Park
AQI 13