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 06/06/26 (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 +]		 WBY Moderate 97 Ozone 69 PPB 8-hour 5 PM
Ft. Collins - Greeley
[expand +]		 GRET Moderate 100 Ozone 70 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 71 Ozone 61 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Moderate 61 Ozone 58 PPB 8-hour 7 PM
Pueblo
[expand +]		 PWES Moderate 64 Ozone 59 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Moderate 58 Ozone 57 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Moderate 61 Ozone 58 PPB 8-hour 7 PM
Steamboat Springs
[expand +]		 SSMB Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 7 AM
Aspen
[expand +]		 ASPN2 Good 22 Particulate < 2.5 micrometers 3 µg/m3 24-hour 10 AM
Other
[expand +]		 DELT Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 3 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 55 0.053 0.048 11 AM

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