SmogRank / Countries / United States / Missouri
Most polluted cities in Missouri, United States
9 measured cities ranked by PM2.5, last 7 days. Worst: Lemay at 9.0 µg/m³, #700 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Lemay Missouri | 9.0 | |
| 2 | St. Louis Missouri | 7.4 | |
| 3 | Columbia low-cost sensorsMissouri | 7.1 | |
| 4 | Springfield Missouri | 6.9 | |
| 5 | Arnold Missouri | 6.0 | |
| 6 | Saint Joseph Missouri | 6.0 | |
| 7 | Raymore Missouri | 5.7 | |
| 8 | University City Missouri | 5.4 | |
| 9 | Liberty Missouri | 4.6 |
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
Missouri 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 |
|---|---|
| Independence estimated | ≈ 8 µg/m³ |
| Lee's Summit estimated | ≈ 7 µg/m³ |
| O'Fallon estimated | ≈ 8 µg/m³ |
| Saint Charles estimated | ≈ 9 µg/m³ |
| Blue Springs estimated | ≈ 8 µg/m³ |
| Saint Peters estimated | ≈ 8 µg/m³ |
| Florissant estimated | ≈ 9 µg/m³ |
| Joplin estimated | ≈ 8 µg/m³ |
| Chesterfield estimated | ≈ 9 µg/m³ |
| Jefferson City estimated | ≈ 7 µg/m³ |
| Cape Girardeau estimated | ≈ 5 µg/m³ |
| Oakville estimated | ≈ 9 µg/m³ |
| Wildwood estimated | ≈ 8 µg/m³ |
| Wentzville estimated | ≈ 8 µg/m³ |
| Ballwin estimated | ≈ 9 µg/m³ |
| Raytown estimated | ≈ 8 µg/m³ |
| Mehlville estimated | ≈ 9 µg/m³ |
| Kirkwood estimated | ≈ 9 µg/m³ |
| Maryland Heights estimated | ≈ 9 µg/m³ |
| Gladstone estimated | ≈ 8 µg/m³ |
| Hazelwood estimated | ≈ 9 µg/m³ |
| Grandview estimated | ≈ 7 µg/m³ |
| Webster Groves estimated | ≈ 9 µg/m³ |
| Sedalia estimated | ≈ 6 µg/m³ |
| Ferguson estimated | ≈ 9 µg/m³ |
| Nixa estimated | ≈ 6 µg/m³ |
| Affton estimated | ≈ 9 µg/m³ |
| Rolla estimated | ≈ 6 µg/m³ |
| Warrensburg estimated | ≈ 6 µg/m³ |
| Spanish Lake estimated | ≈ 9 µg/m³ |
| Old Jamestown estimated | ≈ 9 µg/m³ |
| Ozark estimated | ≈ 6 µg/m³ |
| Creve Coeur estimated | ≈ 9 µg/m³ |
| Manchester estimated | ≈ 9 µg/m³ |
| Farmington estimated | ≈ 5 µg/m³ |
| Hannibal estimated | ≈ 6 µg/m³ |
| Kirksville estimated | ≈ 6 µg/m³ |
| Poplar Bluff estimated | ≈ 5 µg/m³ |
| Sikeston estimated | ≈ 5 µg/m³ |
| Concord estimated | ≈ 9 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.