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Detailed Air Quality Summary for 09/25/17 (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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LNGM Good 15 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 PM
Ft. Collins - Greeley
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FTCW Good 16 Ozone 17 PPB 8-hour 11 PM
Colorado Springs
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ACAD Good 20 Ozone 22 PPB 8-hour 11 PM
Grand Junction
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PAL Good 35 Ozone 38 PPB 8-hour 11 PM
Colorado River Valley
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RIFLO3 Good 29 Ozone 31 PPB 8-hour 11 PM
Four Corners
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CTZ Good 32 Ozone 35 PPB 8-hour 11 PM
Other
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ASPN Good 37 Ozone 40 PPB 8-hour 11 PM

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       Valid data unavailable      
Ft. Collins - Greeley       Valid data unavailable      
Colorado Springs       Valid data unavailable      
Grand Junction       Valid data unavailable      
Colorado River Valley       Valid data unavailable      
Four Corners       Valid data unavailable      

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.