Puerto Rico Air Quality by City
Puerto Rico has 10 cities with an air-quality page, from San Juan (1,813,477 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 Puerto Rico
| City | Typical AQI (county median, 2025) | Population |
|---|---|---|
| San Juan | 7 Good (2021) | 1,813,477 |
| Aguadilla | No EPA monitor | 225,238 |
| Bayamón | 29 Good | 166,923 |
| Carolina | No EPA monitor | 138,633 |
| Arecibo | No EPA monitor | 128,203 |
| Dorado | No EPA monitor | 12,425 |
| Isabela | No EPA monitor | 11,048 |
| Yabucoa | No EPA monitor | 5,557 |
| Lares | No EPA monitor | 5,286 |
| El Paraiso | 3 Good | 1,500 |
Our dataset lists 281 places in Puerto Rico; the 10 above have a page. For a smaller town, the nearest city above is the closest match.