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Detailed Air Quality Summary for 11/25/20 (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 METRO
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I25GLO Moderate 53 Nitrogen Dioxide 56 PPB 1-hour 1 PM
Ft. Collins - Greeley
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GREH Good 41 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 PM
Colorado Springs
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MAN Good 38 Ozone 41 PPB 8-hour 1 PM
Grand Junction
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GJPB Good 19 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 PM
Colorado River Valley
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RIFL Good 19 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 PM
Four Corners
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CTZ Good 19 Ozone 20 PPB 8-hour 1 PM
Other
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ASPN Good 39 Ozone 42 PPB 8-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 34 0.038 0.036 1 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
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I25GLO Moderate 53 Nitrogen Dioxide 56 PPB 1-hour 1 PM
Ft. Collins - Greeley
[expand +]
GREH Good 41 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 PM
Colorado Springs
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MAN Good 38 Ozone 41 PPB 8-hour 12 PM
Grand Junction
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PAL Good 25 Ozone 27 PPB 8-hour 1 AM
Colorado River Valley
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RIFL Good 28 Particulate < 2.5 micrometers 7 µg/m3 24-hour 6 AM
Four Corners
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CTZ Good 19 Ozone 20 PPB 8-hour 1 PM
Other
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ASPN Good 39 Ozone 42 PPB 8-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 36 0.039 0.035 12 PM

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