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Detailed Air Quality Summary for 09/22/14 (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 38 Particulate < 2.5 micrometers 9 µg/m3 24-hour 7 PM
Ft. Collins - Greeley
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FTCW Good 36 Ozone 43 PPB 8-hour 7 PM
Colorado Springs
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ACAD Good 31 Ozone 36 PPB 8-hour 7 PM
Grand Junction
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PAL Good 33 Ozone 39 PPB 8-hour 7 PM
Colorado River Valley
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RIFL Good 43 Particulate < 2.5 micrometers 10 µg/m3 24-hour 7 PM
Four Corners
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CTZ Good 30 Ozone 35 PPB 8-hour 7 PM
Other
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LAY Good 36 Ozone 43 PPB 8-hour 7 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 49 Particulate < 2.5 micrometers 12 µg/m3 24-hour 11 AM
Ft. Collins - Greeley
[expand +]
FTCW Good 36 Ozone 42 PPB 8-hour 6 PM
Colorado Springs
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ACAD Good 34 Ozone 40 PPB 8-hour 1 AM
Grand Junction
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PAL Good 33 Ozone 39 PPB 8-hour 7 PM
Colorado River Valley
[expand +]
RIFL Good 44 Particulate < 2.5 micrometers 11 µg/m3 24-hour 5 PM
Four Corners
[expand +]
CTZ Good 31 Ozone 36 PPB 8-hour 6 PM
Other
[expand +]
LAY Good 36 Ozone 42 PPB 8-hour 6 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 49 0.049 0.038 3 PM
Ft. Collins - Greeley DMA Good 47 0.047 0.038 2 PM

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