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 11/24/21

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 Moderate 53 Particulate < 10 micrometers 59 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]		 GREH Good 42 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 ACAD Good 43 Ozone 46 PPB 8-hour 1 AM
Grand Junction
[expand +]		 GJPB Moderate 52 Particulate < 2.5 micrometers 12 µg/m3 24-hour 6 AM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 35 Ozone 38 PPB 8-hour 3 PM
Four Corners
[expand +]		 CTZ Good 38 Ozone 41 PPB 8-hour 5 PM
Steamboat Springs       Valid data unavailable      
Other
[expand +]		 ASPN Good 37 Ozone 40 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 30 0.034 0.030 1 PM

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