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Air quality in Colorado
Air quality index (AQI) and PM2.5 air pollution in Colorado
LIVE AQI CITY RANKING
Real-time Colorado
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Conifer | 62 |
| 2 | Windsor | 53 |
| 3 | Ignacio | 51 |
| 4 | Mancos | 50 |
| 5 | Towaoc | 48 |
| 6 | Gothic | 42 |
| 7 | Dove Creek | 41 |
| 8 | Castle Rock | 37 |
| 9 | Alamosa | 30 |
| 10 | San Luis | 30 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
418 Contributors
See all
LIVE AQI CITY RANKING
Real-time Colorado
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Louisville | 0 |
| 2 | Superior | 0 |
| 3 | Twin Lakes | 2 |
| 4 | Central City | 3 |
| 5 | Arvada | 4 |
| 6 | Edgewater | 4 |
| 7 | Genesee | 5 |
| 8 | Keystone | 5 |
| 9 | Monument | 5 |
| 10 | Evergreen | 6 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Colorado air quality data attribution
418Contributors
- Utah Air Quality
2 stations
- California Air Resources Board (CARB)
2 stations
- Utah Division of Air Quality
2 stations
- USA National Park Service
2 stations
5 Government Contributors
- Coalition for Clean Air (CCA)
8 stations
Non-profit organization Contributor
Utah State University (USU)2 stations
- Anonymous
1 station
2 Educational Contributors
Cheryl Swanson1 station
- B Brenner
1 station
Ken Danti1 station
- Russ Stewart
1 station
- Matt Maccaux
1 station
john1 station
- SxSmith
1 station
Ed K1 station
TyW1 station
Shawn Vezzani1 station
- mckay&zuni
1 station
L1 station
- John Baum
1 station
- Mark Baybutt
1 station
Aaron Bieber1 station
- BeyondAir
1 station
- Dilan Weerasinghe
1 station
- John Salzman
1 station
- kleinp
1 station
wyndham center1 station
20 Individual Contributors
390 Anonymous contributors390 stations
390 Anonymous Contributors
Which is the most polluted city in Colorado?
- Conifer 62
- Windsor 53
- Ignacio 51
- Mancos 50
- Towaoc 48
- Gothic 42
- Dove Creek 41
- Castle Rock 37
- Brush 34
- Akron 31
- Alamosa 30
- Byers 30
- San Luis 30
- Strasburg 30
- Yuma 30
- Bennett 29
- Canon City 29
- Sterling 28
- Keenesburg 27
- Fruitvale 26
- Greeley 26
- Holyoke 26
- Watkins 26
- Wray 26
- Aristocrat Ranchettes 25
- Brighton 25
- Castle Pines 25
- Dacono 25
- Derby 25
- Federal Heights 25
- Frederick 25
- Glendale 25
- Highlands Ranch 25
- Hudson 25
- Lochbuie 25
- Northglenn 25
- Platteville 25
- Ponderosa Park 25
- Sherrelwood 25
- Todd Creek 25
- Welby 25
- Woodmoor 25
- Berkley 24
- Cherry Creek 24
- Dove Valley 24
- Evans 24
- Firestone 24
- Gilcrest 24
- Holly Hills 24
- Inverness 24
- Kersey 24
- La Salle 24
- Manitou Springs 24
- Meridian 24
- Shaw Heights 24
- Stonegate 24
- Acres Green 23
- Carriage Club 23
- Castlewood 23
- Cherry Hills Village 23
- Elizabeth 23
- Lone Tree 23
- Milliken 23
- Ouray 23
- The Pinery 23
- Wheat Ridge 23
- Applewood 22
- Castle Pines North 22
- Del Norte 22
- Delta 22
- Durango 22
- Kiowa 22
- Limon 22
- Mead 22
- Sheridan 22
- Southglenn 22
- Ault 21
- Bayfield 21
- Berthoud 21
- Black Forest 21
- Campion 21
- Centennial 21
- Columbine 21
- Columbine Valley 21
- Cortez 21
- Florence 21
- Fruita 21
- Grand Junction 21
- Johnstown 21
- La Junta 21
- Pagosa Springs 21
- Redlands 21
- Severance 21
- West Pleasant View 21
- Broomfield 20
- Cedaredge 20
- Clifton 20
- Coal Creek 20
- Colorado Springs 20
- Eaton 20
- Ellicott 20
- Fowler 20
- Kremmling 20
- Mesa 20
- Montrose 20
- New Castle 20
- Orchard Mesa 20
- Pueblo 20
- Pueblo West 20
- Rocky Ford 20
- Roxborough Park 20
- Silverton 20
- Walden 20
- Cimarron Hills 19
- Colorado City 19
- Commerce City 19
- Fountain 19
- Hugo 19
- Kittredge 19
- Laporte 19
- Las Animas 19
- Ordway 19
- Palisade 19
- Security-Widefield 19
- Stratmoor 19
- Air Force Academy 18
- Collbran 18
- Fort Carson 18
- Gunnison 18
- Meeker 18
- Palmer Lake 18
- Paonia 18
- Parachute 18
- Penrose 18
- Perry Park 18
- Silt 18
- Telluride 18
- U.S. Air Force Academy 18
- Woodland Park 18
- Aguilar 17
- Aurora 17
- Battlement Mesa 17
- Burlington 17
- Cascade-Chipita Park 17
- Creede 17
- Cripple Creek 17
- Englewood 17
- Fort Collins 17
- Gleneagle 17
- Hayden 17
- Idaho Springs 17
- Ken Caryl 17
- Lincoln Park 17
- Livermore 17
- Loma 17
- Loveland 17
- Niwot 17
- Olathe 17
- Orchard City 17
- Rangely 17
- Rifle 17
- Springfield 17
- Steamboat Springs 17
- Thornton 17
- Trinidad 17
- Upper Bear Creek 17
- Walsenburg 17
- Wellington 17
- Carbondale 16
- Craig 16
- Erie 16
- Glenwood Springs 16
- Gypsum 16
- Westcliffe 16
- Aspen 15
- Georgetown 15
- Lamar 15
- Longmont 15
- Routt 15
- Salida 15
- Bedrock 14
- Cheyenne Wells 14
- Eads 14
- Glen Eden 14
- Julesburg 14
- Snowmass Village 14
- Vail 14
- Edwards 13
- El Jebel 13
- Greenwood Village 13
- Hot Sulphur Springs 13
- Leadville 13
- Avon 12
- Basalt 12
- Boulder 12
- Buena Vista 12
- Crested Butte 12
- Eagle 12
- Florissant 12
- Fort Lupton 12
- Lake City 12
- Leadville North 12
- Littleton 12
- Lyons 12
- Minturn 12
- Morrison 12
- Park 12
- Saguache 12
- Westminster 12
- Alamosa East 11
- Conejos 11
- Fairplay 11
- Breckenridge 10
- Center 10
- Fort Morgan 10
- Frisco 10
- Granby 10
- Lafayette 10
- Lakewood 10
- Mesa Verde National Park 10
- Mountain Village 10
- Nederland 10
- Parker 10
- Indian Hills 9
- Monte Vista 9
- Silverthorne 9
- Estes Park 8
- Golden 8
- Denver 7
- Fraser 7
- Gunbarrel 7
- Evergreen 6
- Genesee 5
- Keystone 5
- Monument 5
- Arvada 4
- Edgewater 4
- Central City 3
- Twin Lakes 2
- Louisville 0
- Superior 0
AQI US, Metric