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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 06/08/26 (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 +]		 EVG Moderate 77 Ozone 63 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]		 MFP Moderate 51 Ozone 55 PPB 8-hour 7 PM
Colorado Springs
[expand +]		 MAN Moderate 58 Ozone 57 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Moderate 58 Ozone 57 PPB 8-hour 8 PM
Pueblo
[expand +]		 PWES Good 50 Ozone 54 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Moderate 51 Ozone 55 PPB 8-hour 8 PM
Four Corners
[expand +]		 CTZ Moderate 54 Ozone 56 PPB 8-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 21 Particulate < 2.5 micrometers 3 µg/m3 24-hour 2 AM
Aspen
[expand +]		 ASPN Good 47 Ozone 51 PPB 8-hour 8 PM
Other
[expand +]		 DELT Good 46 Particulate < 10 micrometers 50 µg/m3 24-hour 2 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 114 0.086 0.134 3 PM

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