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Detailed Air Quality Summary for 09/12/17

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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RFN Unhealthy for Sensitive Groups 104 Ozone 72 PPB 8-hour 8 PM
Ft. Collins - Greeley
[expand +]
FTCW Moderate 90 Ozone 67 PPB 8-hour 6 PM
Colorado Springs
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MAN Moderate 71 Ozone 61 PPB 8-hour 6 PM
Grand Junction
[expand +]
PAL Good 45 Ozone 49 PPB 8-hour 7 PM
Colorado River Valley
[expand +]
RIFLO3 Good 37 Ozone 40 PPB 8-hour 6 PM
Four Corners
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CTZ Good 43 Ozone 46 PPB 8-hour 6 PM
Other
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ELK Good 49 Ozone 53 PPB 8-hour 6 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 57 0.054 0.038 11 AM

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