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Detailed Air Quality Summary for 01/29/15 (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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I-25 Good 37 Particulate < 2.5 micrometers 9 µg/m3 24-hour 11 PM
Ft. Collins - Greeley
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GRET Good 25 Ozone 30 PPB 8-hour 11 PM
Colorado Springs
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ACAD Good 28 Ozone 33 PPB 8-hour 11 PM
Grand Junction
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PAL Good 25 Ozone 30 PPB 8-hour 11 PM
Colorado River Valley
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RIFLO3 Good 14 Ozone 16 PPB 8-hour 11 PM
Four Corners
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CTZ Good 27 Ozone 32 PPB 8-hour 11 PM
Other
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DELT Good 43 Particulate < 2.5 micrometers 10 µg/m3 24-hour 11 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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I-25 Good 40 Nitrogen Dioxide 42 PPB 1-hour 9 AM
Ft. Collins - Greeley
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GRET Good 35 Ozone 41 PPB 8-hour 6 PM
Colorado Springs
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H24 Good 31 Sulfur Dioxide 22 PPB 1-hour 5 PM
Grand Junction
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GJPB Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM
Colorado River Valley
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RIFLO3 Good 27 Ozone 32 PPB 8-hour 5 PM
Four Corners
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CTZ Good 27 Ozone 32 PPB 8-hour 6 PM
Other
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DELT Good 43 Particulate < 2.5 micrometers 10 µg/m3 24-hour 11 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 46 0.047 0.054 12 PM
Ft. Collins - Greeley DMA Good 17 0.023 0.018 4 PM

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