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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 06/07/26 (Yesterday)

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 +]		 AURE Moderate 71 Ozone 61 PPB 8-hour 4 PM
Ft. Collins - Greeley
[expand +]		 GRET Moderate 74 Ozone 62 PPB 8-hour 5 PM
Colorado Springs
[expand +]		 MAN Moderate 54 Ozone 56 PPB 8-hour 7 PM
Grand Junction
[expand +]		 PAL Moderate 54 Ozone 56 PPB 8-hour 6 PM
Pueblo
[expand +]		 PWES Moderate 58 Ozone 57 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 50 Ozone 54 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 47 Ozone 51 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 8 AM
Aspen
[expand +]		 ASPN2 Good 20 Particulate < 2.5 micrometers 3 µg/m3 24-hour 2 AM
Other
[expand +]		 DELT Good 49 Particulate < 10 micrometers 53 µg/m3 24-hour 9 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 37 0.039 0.053 2 PM

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