Cities with the Cleanest Air in Colorado
EPA Air Quality Index summaries for the city's county: typical AQI, bad-air days and the share of days with good air. Only counties with air monitors are ranked.
3 cities ranked in Colorado (of 95 nationwide).
| Rank | City | Population | Score |
|---|---|---|---|
| 26 | Colorado Springs, CO El Paso County | 493,554 | 71.1 |
| 39 | Aurora, CO Arapahoe County | 403,130 | 58.8 |
| 54 | Denver, CO Denver County | 729,019 | 46.1 |