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Detailed Air Quality Summary for 01/17/19 (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 42 Nitrogen Dioxide 45 PPB 1-hour 6 AM
Ft. Collins - Greeley
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GREH Good 49 Particulate < 2.5 micrometers 12 µg/m3 24-hour 6 AM
Colorado Springs
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MAN Good 38 Ozone 41 PPB 8-hour 6 AM
Grand Junction
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GJPB Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 6 AM
Colorado River Valley
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RIFL Good 29 Particulate < 2.5 micrometers 7 µg/m3 24-hour 6 AM
Four Corners       Valid data unavailable      
Other
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DELT Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 6 AM

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

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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ADM Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
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GREH Good 49 Particulate < 2.5 micrometers 12 µg/m3 24-hour 6 AM
Colorado Springs
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MAN Good 40 Ozone 43 PPB 8-hour 2 AM
Grand Junction
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GJPB Moderate 53 Particulate < 2.5 micrometers 13 µg/m3 24-hour 2 AM
Colorado River Valley
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RIFL Good 34 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 AM
Four Corners       Valid data unavailable      
Other
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DELT Moderate 54 Particulate < 2.5 micrometers 14 µg/m3 24-hour 1 AM

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.