Maine(ME)
Air quality overview and monitoring data — 2025
433
Monitoring Sites
6,902
Active Monitors
17
Counties with Data
71
Cities Monitored
Loading county map...
County Air Quality
| County | Median AQI ▲ | 90th %ile | Max AQI | Good | Moderate | USG | Unhealthy |
|---|---|---|---|---|---|---|---|
| Knox | 34 | 44 | 77 | 293 | 8 | 0 | 0 |
| Penobscot | 34 | 57 | 115 | 261 | 40 | 2 | 0 |
| Androscoggin | 35 | 55 | 112 | 260 | 42 | 2 | 0 |
| Sagadahoc | 35 | 47 | 108 | 207 | 9 | 1 | 0 |
| Aroostook | 36 | 53 | 131 | 153 | 27 | 2 | 0 |
| Kennebec | 36 | 56 | 96 | 254 | 50 | 0 | 0 |
| Washington | 36 | 51 | 100 | 257 | 29 | 0 | 0 |
| York | 36 | 46 | 169 | 292 | 9 | 2 | 1 |
| Hancock | 37 | 51 | 133 | 271 | 29 | 4 | 0 |
| Cumberland | 39 | 63 | 136 | 225 | 74 | 5 | 0 |
| Oxford | 39 | 61 | 135 | 225 | 76 | 3 | 0 |
Pollutant Trends
Ozone
No data available
PM2.5
No data available
PM10
No data available
CO
No data available
NO2
No data available
SO2
No data available