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Detailed Air Quality Summary for 09/21/20 (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
[expand +]		 LNGM Moderate 83 Particulate < 2.5 micrometers 27 µg/m3 24-hour 6 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 88 Particulate < 2.5 micrometers 30 µg/m3 24-hour 6 AM
Colorado Springs
[expand +]		 CCOL Moderate 56 Particulate < 2.5 micrometers 15 µg/m3 24-hour 6 AM
Grand Junction
[expand +]		 GJPB Good 44 Particulate < 2.5 micrometers 11 µg/m3 24-hour 6 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 22 Ozone 24 PPB 8-hour 6 AM
Four Corners
[expand +]		 CTZ Good 26 Ozone 28 PPB 8-hour 6 AM
Other
[expand +]		 ASPN2 Moderate 53 Particulate < 2.5 micrometers 13 µg/m3 24-hour 6 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 +]		 LNGM Moderate 96 Particulate < 2.5 micrometers 34 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 GREH Unhealthy for Sensitive Groups 112 Particulate < 2.5 micrometers 40 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 CCOL Moderate 56 Particulate < 2.5 micrometers 15 µg/m3 24-hour 5 AM
Grand Junction
[expand +]		 GJPB Moderate 51 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 28 Ozone 30 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 33 Ozone 36 PPB 8-hour 1 AM
Other
[expand +]		 ASPN2 Moderate 53 Particulate < 2.5 micrometers 13 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.