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Detailed Air Quality Summary for 01/17/17 (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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I25GLO Moderate 52 Particulate < 2.5 micrometers 13 µg/m3 24-hour 2 PM
Ft. Collins - Greeley
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GREH Good 39 Particulate < 2.5 micrometers 9 µg/m3 24-hour 2 PM
Colorado Springs
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CCOL Good 32 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 PM
Grand Junction
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PAL Good 28 Ozone 30 PPB 8-hour 2 PM
Colorado River Valley
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RIFL Good 34 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 PM
Four Corners
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CTZ Good 17 Ozone 18 PPB 8-hour 2 PM
Other
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ELK Good 40 Ozone 43 PPB 8-hour 2 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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I25GLO Moderate 64 Particulate < 2.5 micrometers 18 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
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GREH Good 39 Particulate < 2.5 micrometers 9 µg/m3 24-hour 2 PM
Colorado Springs
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MAN Good 33 Ozone 36 PPB 8-hour 1 AM
Grand Junction
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PAL Good 39 Ozone 42 PPB 8-hour 1 AM
Colorado River Valley
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RIFL Good 34 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 PM
Four Corners
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CTZ Good 17 Ozone 18 PPB 8-hour 2 PM
Other
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ELK Good 48 Ozone 52 PPB 8-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Ft. Collins - Greeley DMA Good 38 0.040 0.032 1 PM

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