Delaware(DE)
Air quality overview and monitoring data — 2025
45
Monitoring Sites
1,253
Active Monitors
3
Counties with Data
11
Cities Monitored
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County Air Quality
| County | Median AQI ▲ | 90th %ile | Max AQI | Good | Moderate | USG | Unhealthy |
|---|---|---|---|---|---|---|---|
| Sussex | 43 | 58 | 105 | 144 | 36 | 1 | 0 |
| Kent | 44 | 64 | 122 | 127 | 51 | 3 | 0 |
| New Castle | 46 | 69 | 161 | 110 | 68 | 3 | 1 |
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