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Detailed Air Quality Summary for 02/24/18 (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 Unhealthy for Sensitive Groups 116 Particulate < 2.5 micrometers 42 µg/m3 24-hour 4 AM
Ft. Collins - Greeley
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GREH Unhealthy for Sensitive Groups 106 Particulate < 2.5 micrometers 37 µg/m3 24-hour 4 AM
Colorado Springs
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CCOL Moderate 63 Particulate < 2.5 micrometers 18 µg/m3 24-hour 4 AM
Grand Junction
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GJPB Good 9 Particulate < 2.5 micrometers 2 µg/m3 24-hour 4 AM
Colorado River Valley
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RIFL Good 18 Particulate < 2.5 micrometers 4 µg/m3 24-hour 4 AM
Four Corners       Valid data unavailable      
Other
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ASPN Good 41 Ozone 44 PPB 8-hour 4 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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CHAT Unhealthy for Sensitive Groups 116 Particulate < 2.5 micrometers 42 µg/m3 24-hour 3 AM
Ft. Collins - Greeley
[expand +]
GREH Unhealthy for Sensitive Groups 106 Particulate < 2.5 micrometers 37 µg/m3 24-hour 4 AM
Colorado Springs
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CCOL Moderate 66 Particulate < 2.5 micrometers 19 µg/m3 24-hour 1 AM
Grand Junction
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PAL Good 38 Ozone 41 PPB 8-hour 2 AM
Colorado River Valley
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RIFL Good 20 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Four Corners
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CTZ Good 38 Ozone 41 PPB 8-hour 1 AM
Other
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ASPN Good 43 Ozone 46 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.