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Detailed Air Quality Summary for 10/11/17

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
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I25GLO Moderate 62 Nitrogen Dioxide 64 PPB 1-hour 7 PM
Ft. Collins - Greeley
[expand +]
GREH Good 47 Particulate < 2.5 micrometers 11 µg/m3 24-hour 11 PM
Colorado Springs
[expand +]
MAN Good 43 Ozone 46 PPB 8-hour 6 PM
Grand Junction
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PAL Good 39 Ozone 42 PPB 8-hour 8 PM
Colorado River Valley
[expand +]
RIFLO3 Good 32 Ozone 35 PPB 8-hour 6 PM
Four Corners
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CTZ Good 42 Ozone 45 PPB 8-hour 5 PM
Other
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ASPN Good 48 Ozone 52 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Poor 200 0.150 0.155 11 AM

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