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Detailed Air Quality Summary for 02/12/18

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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CHAT Moderate 74 Particulate < 2.5 micrometers 23 µg/m3 24-hour 12 AM
Ft. Collins - Greeley
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GREH Moderate 59 Particulate < 2.5 micrometers 16 µg/m3 24-hour 2 AM
Colorado Springs
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CCOL Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 11 PM
Grand Junction
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PAL Good 28 Ozone 30 PPB 8-hour 1 AM
Colorado River Valley
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RIFLO3 Good 30 Ozone 32 PPB 8-hour 6 PM
Four Corners
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CTZ Good 43 Ozone 46 PPB 8-hour 5 AM
Other
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ELK Good 39 Ozone 42 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

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