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 06/10/21

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 +]		 NREL Unhealthy 159 Ozone 89 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]		 FTCW Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 7 PM
Colorado Springs
[expand +]		 ACAD Moderate 61 Ozone 58 PPB 8-hour 4 PM
Grand Junction
[expand +]		 PAL Good 48 Ozone 52 PPB 8-hour 1 AM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 43 Ozone 46 PPB 8-hour 12 AM
Four Corners
[expand +]		 CTZ Good 43 Ozone 46 PPB 8-hour 4 PM
Steamboat Springs       Valid data unavailable      
Aspen
[expand +]		 ASPN Good 43 Ozone 46 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 109 0.082 0.100 12 PM

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