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 09/10/19

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 for Sensitive Groups 112 Ozone 74 PPB 8-hour 6 PM
Ft. Collins - Greeley
[expand +]		 FTCW Unhealthy for Sensitive Groups 101 Ozone 71 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 77 Ozone 63 PPB 8-hour 8 PM
Grand Junction
[expand +]		 PAL Good 46 Ozone 50 PPB 8-hour 6 PM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 44 Ozone 47 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 44 Ozone 47 PPB 8-hour 3 PM
Steamboat Springs       Valid data unavailable      
Other
[expand +]		 ASPN Moderate 64 Ozone 59 PPB 8-hour 7 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 89 0.070 0.061 11 AM

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