SmogRank / Countries / United States / Utah
Most polluted cities in Utah, United States
15 measured cities ranked by PM2.5, last 30 days. Worst: Millcreek at 6.5 µg/m³, #1036 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Millcreek Utah | 6.5 | |
| 2 | West Valley City Utah | 5.9 | |
| 3 | West Jordan Utah | 5.7 | |
| 4 | Salt Lake City Utah | 5.3 | |
| 5 | Spanish Fork Utah | 5.3 | |
| 6 | Tooele Utah | 5.2 | |
| 7 | Bountiful Utah | 5.1 | |
| 8 | Brigham City Utah | 5.0 | |
| 9 | Magna Utah | 5.0 | |
| 10 | Cedar City Utah | 4.8 | |
| 11 | Herriman Utah | 4.7 | |
| 12 | Orem Utah | 4.6 | |
| 13 | North Ogden Utah | 4.2 | |
| 14 | Hurricane Utah | 3.5 | |
| 15 | Logan low-cost sensorsUtah | 0.6 |
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
Utah cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Provo estimated | ≈ 3 µg/m³ |
| Sandy estimated | ≈ 7 µg/m³ |
| Ogden estimated | ≈ 4 µg/m³ |
| Layton estimated | ≈ 4 µg/m³ |
| Saint George estimated | ≈ 3 µg/m³ |
| South Jordan estimated | ≈ 7 µg/m³ |
| Taylorsville estimated | ≈ 6 µg/m³ |
| Lehi estimated | ≈ 7 µg/m³ |
| Murray estimated | ≈ 6 µg/m³ |
| Draper estimated | ≈ 7 µg/m³ |
| Riverton estimated | ≈ 7 µg/m³ |
| Pleasant Grove estimated | ≈ 3 µg/m³ |
| Roy estimated | ≈ 4 µg/m³ |
| Kearns estimated | ≈ 6 µg/m³ |
| Cottonwood Heights estimated | ≈ 6 µg/m³ |
| Midvale estimated | ≈ 6 µg/m³ |
| Springville estimated | ≈ 4 µg/m³ |
| Holladay estimated | ≈ 6 µg/m³ |
| Clearfield estimated | ≈ 4 µg/m³ |
| Kaysville estimated | ≈ 4 µg/m³ |
| American Fork estimated | ≈ 3 µg/m³ |
| Syracuse estimated | ≈ 4 µg/m³ |
| Eagle Mountain estimated | ≈ 7 µg/m³ |
| Saratoga Springs estimated | ≈ 7 µg/m³ |
| South Salt Lake estimated | ≈ 6 µg/m³ |
| Washington estimated | ≈ 3 µg/m³ |
| Farmington estimated | ≈ 6 µg/m³ |
| Clinton estimated | ≈ 4 µg/m³ |
| East Millcreek estimated | ≈ 6 µg/m³ |
| North Salt Lake estimated | ≈ 6 µg/m³ |
| Payson estimated | ≈ 4 µg/m³ |
| South Ogden estimated | ≈ 4 µg/m³ |
| Centerville estimated | ≈ 6 µg/m³ |
Updated 2026-10-01 14:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.