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 06/26/26

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 +]		 RFN Unhealthy for Sensitive Groups 101 Ozone 71 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]		 FOS Moderate 97 Ozone 69 PPB 8-hour 7 PM
Colorado Springs
[expand +]		 MAN Moderate 64 Ozone 59 PPB 8-hour 6 PM
Grand Junction
[expand +]		 PAL Good 49 Ozone 53 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Moderate 54 Ozone 56 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 41 Ozone 44 PPB 8-hour 5 PM
Four Corners
[expand +]		 CTZ Good 37 Ozone 40 PPB 8-hour 12 PM
Steamboat Springs
[expand +]		 SSMB Moderate 67 Particulate < 2.5 micrometers 17 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN2 Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Other
[expand +]		 ALA Moderate 55 Particulate < 10 micrometers 63 µg/m3 24-hour 7 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 59 0.055 0.063 11 AM

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