Delaware Air Quality by City
Delaware has 1 city with an air-quality page, from Dover (131,461 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 Delaware
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| Dover | 41 Good | 131,461 |
Our dataset lists 79 places in Delaware; the 1 above has a page. For a smaller town, the nearest city above is the closest match.