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Detailed Air Quality Summary for 01/17/18 (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 108 Particulate < 10 micrometers 170 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
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GREH Moderate 57 Particulate < 2.5 micrometers 15 µg/m3 24-hour 5 AM
Colorado Springs
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CCOL Good 31 Particulate < 2.5 micrometers 8 µg/m3 24-hour 5 AM
Grand Junction
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GJPB Good 21 Particulate < 2.5 micrometers 5 µg/m3 24-hour 5 AM
Colorado River Valley
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RIFL Good 21 Particulate < 2.5 micrometers 5 µg/m3 24-hour 5 AM
Four Corners       Valid data unavailable      
Other
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ASPN2 Moderate 58 Particulate < 10 micrometers 69 µg/m3 24-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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CHAT Unhealthy for Sensitive Groups 108 Particulate < 10 micrometers 170 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]
GREH Moderate 57 Particulate < 2.5 micrometers 15 µg/m3 24-hour 5 AM
Colorado Springs
[expand +]
CCOL Good 31 Particulate < 2.5 micrometers 8 µg/m3 24-hour 3 AM
Grand Junction
[expand +]
GJPB Good 21 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]
RIFL Good 21 Particulate < 2.5 micrometers 5 µg/m3 24-hour 4 AM
Four Corners       Valid data unavailable      
Other
[expand +]
ASPN2 Moderate 60 Particulate < 10 micrometers 73 µg/m3 24-hour 3 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.