Colorado
Translate
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 08/12/26

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 METRO
[expand +]		 WBY Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 6 PM
Ft. Collins - Greeley
[expand +]		 FOS Unhealthy for Sensitive Groups 108 Ozone 73 PPB 8-hour 5 PM
Colorado Springs
[expand +]		 ACAD Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 6 PM
Grand Junction
[expand +]		 PAL Moderate 74 Ozone 62 PPB 8-hour 8 PM
Pueblo
[expand +]		 PWES Moderate 97 Ozone 69 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 46 Ozone 50 PPB 8-hour 5 PM
Four Corners
[expand +]		 CTZ Moderate 80 Ozone 64 PPB 8-hour 7 PM
Steamboat Springs
[expand +]		 SSMB Moderate 54 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN Good 48 Ozone 52 PPB 8-hour 6 PM
Other
[expand +]		 LMB Moderate 56 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 103 0.078 0.072 11 AM

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