Utah Air Quality by City
Utah has 19 cities with an air-quality page, from Salt Lake City (1,183,003 people) on down. Each page leads with the live AQI, the main pollutant driving it, and a go/no-go for outdoor exercise on the EPA scale.
Cities in Utah
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| Salt Lake City | 57 Moderate | 1,183,003 |
| Provo | 48 Good | 641,732 |
| Ogden | 45 Good | 630,643 |
| St. George | 44 Good | 148,405 |
| West Valley City | 57 Moderate | 138,437 |
| South Jordan | 57 Moderate | 82,686 |
| Heber | 45 Good | 18,015 |
| Centerville | 46 Good | 16,679 |
| Salem | 48 Good | 10,324 |
| Park City | No EPA monitor | 8,362 |
| Moab | 47 Good | 5,312 |
| Duchesne | 46 Good | 1,753 |
| Green River | No EPA monitor | 720 |
| Timber Lakes | 45 Good | 683 |
| Marysvale | No EPA monitor | 484 |
| Scipio | No EPA monitor | 466 |
| La Sal | 44 Good | 373 |
| Brian Head | 44 Good | 74 |
| Ophir | 44 Good | 0 |
Our dataset lists 332 places in Utah; the 19 above have a page. For a smaller town, the nearest city above is the closest match.