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 01/05/25

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
[expand +]		 ACC Moderate 58 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTCF Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 CCOL Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 3 AM
Grand Junction
[expand +]		 GJPB Good 43 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFL Good 26 Particulate < 2.5 micrometers 4 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 CTZ Good 37 Ozone 40 PPB 8-hour 5 PM
Other
[expand +]		 ALA Good 35 Particulate < 10 micrometers 38 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 62 0.056 0.055 3 PM

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