Worst air pollution Wheaton, today and tomorrow
Today (16 July): Air quality in Wheaton 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 Wheaton 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.
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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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Wheaton's air quality in Maryland reflects the Montgomery County inner suburban corridor north of Washington DC, with vehicle emissions from the Georgia Avenue corridor and the Beltway I-495 contributing local sources in this major Maryland suburb. The broader Washington DC metropolitan airshed contributes regional ozone, while the flat suburban terrain provides reasonable dispersal and the Sligo Creek green corridor provides limited natural ventilation throughout the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
35.2/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Good
13.6/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
9.5/100
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
17.0/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Fair
39.5/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
10.9/100
Pollen forecast in Wheaton
View pollen forecastFrequently Asked Questions
Is air quality bad in Wheaton right now?
On 16 July 2026, overall air quality in Wheaton 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 Wheaton?
On 17 July 2026, air quality conditions in Wheaton 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 Wheaton?
Wheaton's air quality follows a clear seasonal pattern, as the cleanest stretch of the year usually comes in winter; by contrast, summer heat waves bring the highest ozone risk, compounded by pollution drifting in from the wider region. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in Wheaton 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