Missouri Air Quality by City
Missouri has 7 cities with an air-quality page, from St. Louis (2,129,918 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 Missouri
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| St. Louis | 55 Moderate | 2,129,918 |
| Kansas City | 47 Good | 1,714,910 |
| Springfield | 45 Good | 300,073 |
| Columbia | 37 Good | 148,781 |
| Pleasant Hill | 41 Good | 8,847 |
| Clever | No EPA monitor | 3,030 |
| Gravois Mills | No EPA monitor | 116 |
Our dataset lists 1,081 places in Missouri; the 7 above have a page. For a smaller town, the nearest city above is the closest match.