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Banner with Colorado and CDPHE logos on left with text on right reading Colorado Air Quality with Department of Public Health and Environment on the next line.

Detailed Air Quality Summary for 12/07/25 (Today)

Air Quality Forecasts and Advisories & Colorado Smoke Outlook
Learn more about monitoring sites: site descriptions and
real-time monitoring map

All data are collected real-time and have not been corrected nor validated.		 Current Air Quality

Current Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 EVG Good 44 Ozone 47 PPB 8-hour 2 PM
Ft. Collins - Greeley
[expand +]		 MFP Good 40 Ozone 43 PPB 8-hour 2 PM
Colorado Springs
[expand +]		 MAN Good 42 Ozone 45 PPB 8-hour 2 PM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 2 PM
Pueblo
[expand +]		 PWES Good 38 Ozone 41 PPB 8-hour 2 PM
Colorado River Valley
[expand +]		 RIFL Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 2 PM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 2 PM
Steamboat Springs
[expand +]		 SSMB Good 12 Particulate < 2.5 micrometers 2 µg/m3 24-hour 2 PM
Aspen
[expand +]		 ASPN Good 30 Ozone 32 PPB 8-hour 2 PM
Other
[expand +]		 DELT Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 2 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 14 0.021 0.022 2 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 EVG Good 44 Ozone 47 PPB 8-hour 12 PM
Ft. Collins - Greeley
[expand +]		 MFP Good 40 Ozone 43 PPB 8-hour 2 PM
Colorado Springs
[expand +]		 MAN Good 42 Ozone 45 PPB 8-hour 2 PM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 7 AM
Pueblo
[expand +]		 PWES Good 38 Ozone 41 PPB 8-hour 2 PM
Colorado River Valley
[expand +]		 RIFL Good 26 Particulate < 2.5 micrometers 4 µg/m3 24-hour 12 PM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 2 PM
Steamboat Springs
[expand +]		 SSMB Good 12 Particulate < 2.5 micrometers 2 µg/m3 24-hour 2 PM
Aspen
[expand +]		 ASPN Good 30 Ozone 32 PPB 8-hour 2 PM
Other
[expand +]		 DELT Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 7 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 14 0.021 0.022 2 PM

* All data are reported in Mountain Standard Time (MST). During daylight savings time add one hour to the reported hour.

AQI health statements
Site information and abbreviations