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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 03/27/25

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 52 Particulate < 10 micrometers 57 µg/m3 24-hour 7 PM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 7 AM
Colorado Springs
[expand +]		 MAN Good 48 Ozone 52 PPB 8-hour 7 PM
Grand Junction
[expand +]		 PAL Good 44 Ozone 48 PPB 8-hour 8 PM
Pueblo
[expand +]		 PWES Good 45 Ozone 49 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 41 Ozone 44 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 48 Ozone 52 PPB 8-hour 6 PM
Other
[expand +]		 TEL Moderate 62 Particulate < 10 micrometers 77 µg/m3 24-hour 3 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 51 0.051 0.044 11 AM

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