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Detailed Air Quality Summary for 06/25/17 (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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CHAT Moderate 51 Particulate < 2.5 micrometers 12 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
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FTCW Good 35 Ozone 38 PPB 8-hour 5 AM
Colorado Springs
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ACAD Good 33 Ozone 36 PPB 8-hour 5 AM
Grand Junction
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PAL Good 39 Ozone 42 PPB 8-hour 5 AM
Colorado River Valley
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RIFLO3 Good 27 Ozone 29 PPB 8-hour 5 AM
Four Corners
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CTZ Good 39 Ozone 42 PPB 8-hour 5 AM
Other
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ASPN Good 43 Ozone 46 PPB 8-hour 5 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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SWAN Moderate 54 Particulate < 2.5 micrometers 13 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
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FTCW Good 47 Ozone 51 PPB 8-hour 1 AM
Colorado Springs
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ACAD Good 45 Ozone 49 PPB 8-hour 1 AM
Grand Junction
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PAL Good 48 Ozone 52 PPB 8-hour 1 AM
Colorado River Valley
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RIFLO3 Good 37 Ozone 40 PPB 8-hour 1 AM
Four Corners
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CTZ Good 48 Ozone 52 PPB 8-hour 1 AM
Other
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ASPN Good 49 Ozone 53 PPB 8-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.