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 09/14/21

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 +]		 RFN Moderate 84 Ozone 65 PPB 8-hour 8 PM
Ft. Collins - Greeley
[expand +]		 FTCW Moderate 71 Ozone 61 PPB 8-hour 8 PM
Colorado Springs
[expand +]		 ACAD Good 48 Ozone 52 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Good 45 Ozone 49 PPB 8-hour 8 PM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 46 Ozone 50 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 41 Ozone 44 PPB 8-hour 6 PM
Steamboat Springs       Valid data unavailable      
Other
[expand +]		 ASPN Good 44 Ozone 47 PPB 8-hour 6 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 94 0.072 0.071 1 PM

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