Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Delaware
Air quality index (AQI) and PM2.5 air pollution in Delaware
LIVE AQI CITY RANKING
Real-time Delaware
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Middletown | 19 |
| 2 | Claymont | 18 |
| 3 | Felton | 18 |
| 4 | Dover | 17 |
| 5 | Millsboro | 16 |
| 6 | New Castle | 16 |
| 7 | Delaware City | 15 |
| 8 | Newark | 15 |
| 9 | Edgemoor | 14 |
| 10 | Seaford | 14 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
22 Contributors
See all
LIVE AQI CITY RANKING
Real-time Delaware
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Glasgow | 11 |
| 2 | Milford | 12 |
| 3 | Bear | 13 |
| 4 | Bridgeville | 13 |
| 5 | Brookside | 13 |
| 6 | Pike Creek | 13 |
| 7 | Rehoboth Beach | 13 |
| 8 | Edgemoor | 14 |
| 9 | Seaford | 14 |
| 10 | Wilmington | 14 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
News
The latest air quality news and resources.
Delaware air quality data attribution
22Contributors
Government Contributor
- 21 Anonymous contributors
21 stations
21 Anonymous Contributors
Which is the most polluted city in Delaware?
- Lewes 33
- Middletown 19
- Claymont 18
- Felton 18
- Dover 17
- Millsboro 16
- New Castle 16
- Delaware City 15
- Newark 15
- Edgemoor 14
- Seaford 14
- Wilmington 14
- Bear 13
- Bridgeville 13
- Brookside 13
- Pike Creek 13
- Rehoboth Beach 13
- Delmar 12
- Hockessin 12
- Milford 12
- North Star 12
- Pike Creek Valley 12
- Bellefonte 11
- Blades 11
- Camden 11
- Cheswold 11
- Clayton 11
- Dover Base Housing 11
- Elsmere 11
- Georgetown 11
- Glasgow 11
- Greenville 11
- Greenwood 11
- Harrington 11
- Highland Acres 11
- Kent Acres 11
- Laurel 11
- Milton 11
- Newport 11
- Rising Sun-Lebanon 11
- Riverview 11
- Rodney Village 11
- Selbyville 11
- Townsend 11
- Wilmington Manor 11
- Woodside East 11
- Wyoming 11
- Bethany Beach 10
- Long Neck 10
- Ocean View 10
- Smyrna 10
AQI US, Metric