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 02/07/25 (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
[expand +]		 ADB Moderate 61 Particulate < 10 micrometers 75 µg/m3 24-hour 12 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 47 Ozone 51 PPB 8-hour 9 PM
Colorado Springs
[expand +]		 MAN Moderate 58 Ozone 57 PPB 8-hour 12 PM
Grand Junction
[expand +]		 PAL Good 48 Ozone 52 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 41 Ozone 44 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 44 Ozone 47 PPB 8-hour 5 PM
Other
[expand +]		 ASPN2 Moderate 53 Particulate < 10 micrometers 59 µg/m3 24-hour 12 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 166 0.125 0.100 1 PM

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