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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 02/26/25 (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 54 Ozone 56 PPB 8-hour 5 PM
Ft. Collins - Greeley
[expand +]		 FTC Moderate 51 Ozone 55 PPB 8-hour 4 AM
Colorado Springs
[expand +]		 MAN Good 49 Ozone 53 PPB 8-hour 6 PM
Grand Junction
[expand +]		 PAL Good 44 Ozone 48 PPB 8-hour 6 PM
Pueblo
[expand +]		 PWES Good 50 Ozone 54 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 42 Ozone 45 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 48 Ozone 52 PPB 8-hour 6 PM
Other
[expand +]		 TEL Moderate 51 Particulate < 10 micrometers 55 µg/m3 24-hour 3 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 33 0.037 0.030 12 PM

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