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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
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NREL Unhealthy 159 Ozone 89 PPB 8-hour 7 PM
Ft. Collins - Greeley
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FTCW Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 6 PM
Colorado Springs
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ACAD Moderate 61 Ozone 58 PPB 8-hour 5 PM
Grand Junction
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PAL Good 48 Ozone 52 PPB 8-hour 1 AM
Colorado River Valley
[expand +]
RIFLO3 Good 43 Ozone 46 PPB 8-hour 12 AM
Four Corners
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CTZ Good 43 Ozone 46 PPB 8-hour 4 PM
Other
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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.