Worst air pollution Severn, today and tomorrow
Today (16 July): Air quality in Severn is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 35.2/100).
Tomorrow (17 July 2026): Air quality in Severn is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 39.5/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Severn's air quality reflects the Anne Arundel County suburban position between Baltimore and the Chesapeake Bay in Maryland, with vehicle emissions from I-97 and the surrounding suburban residential and government corridor contributing local sources. The broader Baltimore-Washington mid-Atlantic regional airshed contributes elevated summer ozone, while the flat Maryland Coastal Plain allows reasonable dispersal and the Chesapeake Bay's maritime influence provides periodic ventilation from the east throughout the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
35.2/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Good
2.9/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
7.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
39.5/100
PM2.5 (fine particles):
Good
14.1/100
PM10 (coarse particles):
Good
9.0/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Fair
39.5/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
9.1/100
Pollen forecast in Severn
View pollen forecastFrequently Asked Questions
Is air quality bad in Severn right now?
On 16 July 2026, overall air quality in Severn is fair. AQI is the main air quality indicator at 35.2/100. Pollution peaks around 1:00 PM (O3: 35.2/100).
Will air quality be worse tomorrow in Severn?
On 17 July 2026, air quality conditions in Severn will be similar to today, with AQI forecast at fair at 39.5/100. Pollution peaks around 12:00 PM (O3: 39.5/100).
When is air pollution at its worst in Severn?
Severn sees air quality change through the year. Typically, winter generally brings the cleanest air, once the summer ozone season has passed, while extended summer heat waves, often worsened by regional haze, bring the toughest air quality stretch. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Severn 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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