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Detailed Air Quality Summary for 12/11/17 (Today)

Air Quality Forecasts and Advisories & Colorado Smoke Outlook
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.
Current Air Quality

Current Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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I25DEN Good 44 Nitrogen Dioxide 47 PPB 1-hour 12 PM
Ft. Collins - Greeley
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GREH Moderate 59 Particulate < 2.5 micrometers 16 µg/m3 24-hour 12 PM
Colorado Springs
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MAN Good 34 Ozone 37 PPB 8-hour 12 PM
Grand Junction
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GJPB Good 36 Particulate < 2.5 micrometers 9 µg/m3 24-hour 12 PM
Colorado River Valley
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RIFL Good 24 Particulate < 2.5 micrometers 6 µg/m3 24-hour 12 PM
Four Corners
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CTZ Good 16 Ozone 17 PPB 8-hour 12 PM
Other
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DELT Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 12 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 80 0.065 0.074 12 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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I25GLO Good 48 Nitrogen Dioxide 51 PPB 1-hour 10 AM
Ft. Collins - Greeley
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GREH Moderate 59 Particulate < 2.5 micrometers 16 µg/m3 24-hour 12 PM
Colorado Springs
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MAN Good 40 Ozone 43 PPB 8-hour 8 AM
Grand Junction
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GJPB Good 36 Particulate < 2.5 micrometers 9 µg/m3 24-hour 12 PM
Colorado River Valley
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RIFL Good 25 Particulate < 2.5 micrometers 6 µg/m3 24-hour 11 AM
Four Corners
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CTZ Good 16 Ozone 17 PPB 8-hour 12 PM
Other
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DELT Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 10 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 80 0.065 0.074 12 PM

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