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Detailed Air Quality Summary for 12/13/17 (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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AURE Good 40 Ozone 43 PPB 8-hour 5 PM
Ft. Collins - Greeley
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GREH Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 5 PM
Colorado Springs
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MAN Good 33 Ozone 36 PPB 8-hour 5 PM
Grand Junction
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GJPB Moderate 56 Particulate < 2.5 micrometers 14 µg/m3 24-hour 5 PM
Colorado River Valley
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RIFL Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 5 PM
Four Corners
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CTZ Good 21 Ozone 23 PPB 8-hour 5 PM
Other
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ASPN2 Moderate 51 Particulate < 2.5 micrometers 12 µg/m3 24-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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ADM Good 50 Particulate < 10 micrometers 54 µg/m3 24-hour 6 AM
Ft. Collins - Greeley
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GREH Moderate 54 Particulate < 2.5 micrometers 13 µg/m3 24-hour 4 AM
Colorado Springs
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MAN Good 42 Ozone 45 PPB 8-hour 7 AM
Grand Junction
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GJPB Moderate 56 Particulate < 2.5 micrometers 14 µg/m3 24-hour 5 PM
Colorado River Valley
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RIFL Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 5 PM
Four Corners
[expand +]
CTZ Good 21 Ozone 23 PPB 8-hour 5 PM
Other
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ASPN2 Moderate 52 Particulate < 2.5 micrometers 12 µg/m3 24-hour 2 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 62 0.057 0.060 4 PM

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