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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 11/14/26 (Yesterday)

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 +]		 ADB Moderate 77 Particulate < 10 micrometers 107 µg/m3 24-hour 2 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 62 Particulate < 2.5 micrometers 15 µg/m3 24-hour 3 AM
Colorado Springs
[expand +]		 CCOL Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 2 AM
Grand Junction
[expand +]		 PAL Good 36 Ozone 39 PPB 8-hour 7 PM
Pueblo
[expand +]		 CAN Good 47 Particulate < 2.5 micrometers 8 µg/m3 24-hour 11 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 33 Ozone 36 PPB 8-hour 8 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 5 PM
Steamboat Springs
[expand +]		 SSMB Good 22 Particulate < 2.5 micrometers 3 µg/m3 24-hour 4 PM
Aspen
[expand +]		 ASPN2 Good 23 Particulate < 2.5 micrometers 4 µg/m3 24-hour 5 AM
Other
[expand +]		 DELT Good 44 Particulate < 2.5 micrometers 7 µg/m3 24-hour 4 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Ext Poor 201 0.154 0.132 3 PM

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