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 01/13/26

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 +]		 LNGM Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 60 Particulate < 2.5 micrometers 14 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 39 Ozone 42 PPB 8-hour 5 AM
Grand Junction
[expand +]		 GJPB Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 12 AM
Colorado River Valley
[expand +]		 RIFL Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 12 AM
Four Corners
[expand +]		 PAG Good 35 Particulate < 10 micrometers 38 µg/m3 24-hour 12 AM
Other
[expand +]		 ALA Moderate 58 Particulate < 2.5 micrometers 12 µg/m3 24-hour 7 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 66 0.059 0.064 12 PM

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