Colorado
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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 01/06/26

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.

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 ADB Moderate 51 Particulate < 10 micrometers 55 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 45 Ozone 49 PPB 8-hour 4 PM
Colorado Springs
[expand +]		 MAN Good 45 Ozone 49 PPB 8-hour 4 PM
Grand Junction
[expand +]		 PAL Good 33 Ozone 36 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 46 Ozone 50 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 26 Ozone 28 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 30 Ozone 32 PPB 8-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 17 Particulate < 2.5 micrometers 3 µg/m3 24-hour 12 AM
Aspen
[expand +]		 ASPN Good 34 Ozone 37 PPB 8-hour 5 PM
Other
[expand +]		 ALA Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 12 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 25 0.030 0.029 12 PM

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