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 02/03/25

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 +]		 EVG Good 44 Ozone 47 PPB 8-hour 8 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 42 Ozone 45 PPB 8-hour 6 AM
Colorado Springs
[expand +]		 ACAD Good 37 Ozone 40 PPB 8-hour 4 AM
Grand Junction
[expand +]		 GJPB Moderate 58 Particulate < 2.5 micrometers 12 µg/m3 24-hour 2 PM
Pueblo
[expand +]		 PWES Good 36 Ozone 39 PPB 8-hour 4 PM
Colorado River Valley
[expand +]		 RIFL Good 44 Particulate < 2.5 micrometers 7 µg/m3 24-hour 10 AM
Four Corners
[expand +]		 CTZ Good 34 Ozone 37 PPB 8-hour 6 PM
Other
[expand +]		 PAG Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 12 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 83 0.067 0.077 4 PM

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