Maine Air Quality by City
Maine has 1 city with an air-quality page, from Portland (210,907 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 Maine
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| Portland | 39 Good | 210,907 |
Our dataset lists 66 places in Maine; the 1 above has a page. For a smaller town, the nearest city above is the closest match.