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Detailed Air Quality Summary for 01/20/18 (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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SWAN Moderate 55 Particulate < 2.5 micrometers 14 µg/m3 24-hour 3 PM
Ft. Collins - Greeley
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GREH Moderate 60 Particulate < 10 micrometers 73 µg/m3 24-hour 3 PM
Colorado Springs
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MAN Good 34 Ozone 37 PPB 8-hour 3 PM
Grand Junction
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GJPB Good 41 Particulate < 2.5 micrometers 10 µg/m3 24-hour 3 PM
Colorado River Valley
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RIFL Good 31 Particulate < 2.5 micrometers 8 µg/m3 24-hour 3 PM
Four Corners
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CTZ Good 35 Ozone 38 PPB 8-hour 3 PM
Other
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DELT Good 39 Particulate < 2.5 micrometers 9 µg/m3 24-hour 3 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 35 0.038 0.032 3 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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ADM Moderate 71 Particulate < 10 micrometers 95 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
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GREH Moderate 83 Particulate < 2.5 micrometers 27 µg/m3 24-hour 1 AM
Colorado Springs
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MAN Good 34 Ozone 37 PPB 8-hour 3 PM
Grand Junction
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GJPB Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 2 AM
Colorado River Valley
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RIFL Good 31 Particulate < 2.5 micrometers 8 µg/m3 24-hour 3 PM
Four Corners
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CTZ Good 35 Ozone 38 PPB 8-hour 3 PM
Other
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DELT Good 49 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 64 0.057 0.036 1 PM

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