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Detailed Air Quality Summary for 11/20/19 (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
[expand +]		 ADM Moderate 66 Particulate < 10 micrometers 85 µg/m3 24-hour 11 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 59 Particulate < 10 micrometers 71 µg/m3 24-hour 11 AM
Colorado Springs
[expand +]		 CCOL Good 30 Particulate < 10 micrometers 32 µg/m3 24-hour 11 AM
Grand Junction
[expand +]		 GJPB Good 20 Particulate < 2.5 micrometers 5 µg/m3 24-hour 11 AM
Colorado River Valley
[expand +]		 RIFL Good 17 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 AM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 11 AM
Other
[expand +]		 ASPN2 Good 29 Particulate < 10 micrometers 31 µg/m3 24-hour 11 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 METRO
[expand +]		 ADM Moderate 68 Particulate < 10 micrometers 90 µg/m3 24-hour 9 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 59 Particulate < 10 micrometers 71 µg/m3 24-hour 11 AM
Colorado Springs
[expand +]		 CCOL Good 30 Particulate < 10 micrometers 32 µg/m3 24-hour 11 AM
Grand Junction
[expand +]		 GJPB Good 31 Particulate < 10 micrometers 33 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFL Good 20 Particulate < 2.5 micrometers 5 µg/m3 24-hour 2 AM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 11 AM
Other
[expand +]		 ASPN2 Good 36 Particulate < 10 micrometers 39 µg/m3 24-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)

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