Worst air pollution Denver, today and tomorrow
Today (16 July): Air quality in Denver is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 37.2/100).
Tomorrow (17 July 2026): Air quality in Denver is fair. All pollutants stay as today. Pollution peaks around 11:00 AM (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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Denver's air quality is shaped by the Front Range topography, with the Rocky Mountains to the west channelling and trapping vehicle and industrial emissions in the piedmont corridor under frequent temperature inversions. The mile-high elevation provides some dispersal advantage, but the Denver metro's extensive highway network generates sustained ozone and PM2.5 challenges.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
37.2/100
PM2.5 (fine particles):
Good
12.2/100
PM10 (coarse particles):
Good
9.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
37.2/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Fair
39.1/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
8.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
39.1/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
9.0/100
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Frequently Asked Questions
Is air quality bad in Denver right now?
On 16 July 2026, overall air quality in Denver is fair. AQI is the main air quality indicator at 37.2/100. Pollution peaks around 12:00 PM (O3: 37.2/100).
Will air quality be worse tomorrow in Denver?
On 17 July 2026, air quality conditions in Denver will be similar to today, with AQI forecast at fair at 39.1/100. Pollution peaks around 11:00 AM (O3: 39.1/100).
When is air pollution at its worst in Denver?
Denver sees air quality change through the year, as spring and autumn generally bring the cleanest, most stable air; by contrast, wildfire smoke drifting in from across the region is the main summer concern, while winter inversions can trap pollution locally. Higher-elevation, more exposed locations generally avoid the worst of the valley inversion episodes.
Are air quality levels in Denver 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