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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 02/26/26 (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
[expand +]		 WBY Moderate 83 Particulate < 10 micrometers 119 µg/m3 24-hour 3 AM
Ft. Collins - Greeley
[expand +]		 TIM Moderate 58 Ozone 57 PPB 8-hour 5 PM
Colorado Springs
[expand +]		 MAN Good 48 Ozone 52 PPB 8-hour 9 PM
Grand Junction
[expand +]		 PAL Good 44 Ozone 47 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 31 Ozone 33 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 40 Ozone 43 PPB 8-hour 6 PM
Other
[expand +]		 DELT Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 24 0.030 0.028 12 PM

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