South Dakota Air Quality by City
South Dakota has 2 cities with an air-quality page, from Sioux Falls (207,648 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 South Dakota
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| Sioux Falls | 36 Good | 207,648 |
| Hot Springs | No EPA monitor | 3,548 |
Our dataset lists 482 places in South Dakota; the 2 above have a page. For a smaller town, the nearest city above is the closest match.