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Detailed Air Quality Summary for 03/21/13

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 Good 49 Ozone 58 PPB 8-hour 12 AM
Ft. Collins - Greeley
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FTCW Good 47 Ozone 55 PPB 8-hour 9 PM
Colorado Springs
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ACAD Good 42 Ozone 49 PPB 8-hour 5 PM
Grand Junction
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PAL Good 43 Ozone 51 PPB 8-hour 7 PM
Colorado River Valley
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RIFLO3 Good 42 Ozone 49 PPB 8-hour 8 PM
Four Corners
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CTZ Good 44 Ozone 52 PPB 8-hour 8 PM
Other
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LAY Good 45 Ozone 53 PPB 8-hour 10 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 90 0.070 0.045 11 AM
Ft. Collins - Greeley DMA Poor 154 0.116 0.096 11 AM

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