Maryland Air Quality by City
Maryland has 13 cities with an air-quality page, from Baltimore (2,201,673 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 Maryland
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| Baltimore | 43 Good | 2,201,673 |
| Hagerstown | 40 Good | 204,653 |
| Frederick | 41 Good | 195,161 |
| Waldorf | 38 Good | 126,400 |
| Annapolis | 40 Good | 40,720 |
| Severna Park | 40 Good | 40,228 |
| Randallstown | 45 Good | 35,957 |
| Bel Air | 42 Good | 10,585 |
| Ocean City | No EPA monitor | 6,903 |
| Perryman | 42 Good | 2,174 |
| Grantsville | 39 Good | 1,013 |
| Sharpsburg | 40 Good | 585 |
| Clear Spring | 40 Good | 342 |
Our dataset lists 532 places in Maryland; the 13 above have a page. For a smaller town, the nearest city above is the closest match.