Worst air pollution Dayton, today and tomorrow
Today (16 July): Air quality in Dayton is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 37.2/100).
Tomorrow (17 July 2026): Air quality in Dayton is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 39.1/100). 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.
Dayton's air quality reflects the flat Miami River valley terrain providing reasonable wind dispersal, with vehicle emissions from I-75 and I-70 the primary local source in this mid-sized Midwestern city. The broader Ohio Valley regional airshed contributes elevated background ozone during summer, while industrial emissions from the Dayton manufacturing corridor add to the local PM2.5 burden throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
10.1/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
8.7/100
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):
Good
14.6/100
PM10 (coarse particles):
Good
8.8/100
NO2 (nitrogen dioxide):
Good
5.5/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
9.6/100
Pollen forecast in Dayton
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Dayton
Sports venues in Dayton
Frequently Asked Questions
Is air quality bad in Dayton right now?
On 16 July 2026, overall air quality in Dayton 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 Dayton?
On 17 July 2026, air quality conditions in Dayton 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 Dayton?
Air quality across Dayton rises and falls with the seasons. In short, spring and autumn tend to bring the cleanest, most stable air, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Dayton 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