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 02/25/24

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 +]		 AURE Moderate 54 Ozone 56 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]		 LAST Moderate 51 Ozone 55 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 54 Ozone 56 PPB 8-hour 7 PM
Grand Junction
[expand +]		 PAL Good 39 Ozone 42 PPB 8-hour 7 PM
Pueblo
[expand +]		 PWES Good 46 Ozone 50 PPB 8-hour 4 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 37 Ozone 40 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 41 Ozone 44 PPB 8-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 50 Particulate < 10 micrometers 54 µg/m3 24-hour 7 PM
Aspen
[expand +]		 ASPN2 Moderate 60 Particulate < 10 micrometers 73 µg/m3 24-hour 1 PM
Other
[expand +]		 TEL Good 40 Particulate < 10 micrometers 43 µg/m3 24-hour 5 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 37 0.039 0.038 4 PM

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