Toggle navigation
Places
AQI (China)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
English
Français
Deutsch
日本語
한국어
简体中文
繁體中文
North America
United States
Colorado
AQI (China)
AQC (Australia)
AQHI (Canada)
AQI (China)
AQI (Netherlands)
AQI (US)
CAQI (Europe)
AQI (UK)
AQI (India)
Colorado
United States
2026-05-29 22:00
AQI (China)
Excellent
Pollutants
|
Pollens
PM10
μg/m³
44.5
O3
μg/m³
124.2
PM2.5
μg/m³
3.8
NO2
μg/m³
4.7
CO
μg/m³
145.8
SO2
μg/m³
1.3
Pollen
7.4
Weather
℃
℃
℉
12℃
38%
20 kph
3 of 11
Historical Data
Hourly
Hourly
Daily
AQI (China)
AQI (China)
Pollen
PM10
O3
PM2.5
NO2
CO
SO2
Places included
Adams County
AQI 102
Alamosa County
AQI 16
Arapahoe County
AQI 41
Archuleta County
AQI 43
Baca County
AQI 16
Bent County
AQI 27
Boulder County
AQI 61
Broomfield County
AQI 142
Chaffee County
AQI 4
Cheyenne County
AQI 9
Clear Creek County
AQI 38
Conejos County
AQI 81
Costilla County
AQI 18
Crowley County
AQI 8
Custer County
AQI 6
Delta County
AQI 21
Denver County
AQI 38
Dolores County
AQI 5
Douglas County
AQI 39
Eagle County
AQI 4
El Paso County
AQI 38
Elbert County
AQI 25
Fremont County
AQI 17
Garfield County
AQI 40
Gilpin County
AQI 65
Grand County
AQI 5
Gunnison County
AQI 39
Hinsdale County
AQI 11
Huerfano County
AQI 4
Jackson County
AQI 5
Jefferson County
AQI 40
La Plata County
AQI 42
Lake County
AQI 4
Larimer County
AQI 36
Las Animas County
AQI 4
Lincoln County
AQI 11
Logan County
AQI 6
Mesa County
AQI 43
Mineral County
AQI 6
Moffat County
AQI 6
Montezuma County
AQI 40
Montrose County
AQI 26
Morgan County
AQI 8
Otero County
AQI 9
Ouray County
AQI 18
Park County
AQI 4
Phillips County
AQI 5
Pitkin County
AQI 36
Prowers County
AQI 21
Pueblo County
AQI 39
Rio Blanco County
AQI 6
Rio Grande County
AQI 81
Routt County
AQI 7
Saguache County
AQI 17
San Juan County
AQI 18
San Miguel County
AQI 17
Sedgwick County
AQI 5
Summit County
AQI 8
Teller County
AQI 5
Washington County
AQI 7
Weld County
AQI 40
Yuma County
AQI 6
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
Scan QR Code to Download App
iOS
Google Play
Download APK
Cities Nearby
Keystone
AQI 24
Georgetown
AQI 39
Breckenridge
AQI 10
Silverthorne
AQI 7
Frisco
AQI 5
Wildernest
AQI 5
Bailey
AQI 36
Idaho Springs
AQI 37
Copper Mountain
AQI 5
Black Hawk
AQI 37
Winter Park
AQI 24
Air Matters © 2026