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Detailed Air Quality Summary for 04/20/17

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 +]
BOUR Good 48 Ozone 52 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]
FTCW Good 48 Ozone 52 PPB 8-hour 5 PM
Colorado Springs
[expand +]
MAN Good 48 Ozone 52 PPB 8-hour 1 AM
Grand Junction
[expand +]
PAL Moderate 54 Ozone 56 PPB 8-hour 8 PM
Colorado River Valley       Valid data unavailable      
Four Corners
[expand +]
CTZ Moderate 58 Ozone 57 PPB 8-hour 7 PM
Other
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ASPN Moderate 74 Ozone 62 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 66 0.058 0.083 3 PM

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