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Detailed Air Quality Summary for 09/15/20

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 Moderate 71 Ozone 61 PPB 8-hour 7 PM
Ft. Collins - Greeley
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FTCF Moderate 60 Particulate < 2.5 micrometers 16 µg/m3 24-hour 12 AM
Colorado Springs
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ACAD Good 50 Ozone 54 PPB 8-hour 5 PM
Grand Junction
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PAL Good 45 Ozone 49 PPB 8-hour 6 PM
Colorado River Valley
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RIFLO3 Good 44 Ozone 48 PPB 8-hour 7 PM
Four Corners
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CTZ Good 38 Ozone 45 PPB 8-hour 6 PM
Other
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ASPN Good 42 Ozone 45 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 69 0.060 0.073 3 PM

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