Worst air pollution Wilmington, today and tomorrow
Today (16 July): Air quality in Wilmington is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 37.2/100).
Tomorrow (17 July 2026): Air quality in Wilmington is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 39.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Wilmington's air quality reflects its position along the Christina and Delaware Rivers as Delaware's largest city and a mid-Atlantic financial and chemical industry hub, with vehicle emissions from I-95 and the surrounding corporate and industrial corridor contributing local sources. The broader Philadelphia-Baltimore-Washington regional airshed contributes summer ozone, while the flat coastal plain generally allows reasonable dispersal throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
14.2/100
NO2 (nitrogen dioxide):
Fair
28.7/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
5.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
12.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
39.1/100
PM2.5 (fine particles):
Fair
20.4/100
PM10 (coarse particles):
Good
12.4/100
NO2 (nitrogen dioxide):
Fair
33.0/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
5.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
13.5/100
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Frequently Asked Questions
Is air quality bad in Wilmington right now?
On 16 July 2026, overall air quality in Wilmington is fair. AQI is the main air quality indicator at 37.2/100. Pollution peaks around 2:00 PM (O3: 37.2/100).
Will air quality be worse tomorrow in Wilmington?
On 17 July 2026, air quality conditions in Wilmington will be similar to today, with AQI forecast at fair at 39.1/100. Pollution peaks around 1:00 PM (O3: 39.1/100).
When is air pollution at its worst in Wilmington?
Like most US cities, Wilmington sees air quality shift from season to season. Typically, winter generally brings the cleanest air, once the summer ozone season has passed, while the hottest, most humid summer weeks bring the year's highest ozone readings. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Wilmington based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app