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Detailed Air Quality Summary for 10/21/19 (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 +]		 BHWK Good 35 Ozone 38 PPB 8-hour 1 PM
Ft. Collins - Greeley
[expand +]		 FTCW Good 36 Ozone 39 PPB 8-hour 1 PM
Colorado Springs
[expand +]		 MAN Good 37 Ozone 40 PPB 8-hour 1 PM
Grand Junction
[expand +]		 GJPB Good 15 Particulate < 2.5 micrometers 4 µg/m3 24-hour 1 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 16 Ozone 17 PPB 8-hour 1 PM
Four Corners       Valid data unavailable      
Other
[expand +]		 ASPN Good 22 Ozone 24 PPB 8-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 38 0.041 0.025 1 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 ADM Moderate 52 Particulate < 10 micrometers 58 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 36 Ozone 39 PPB 8-hour 1 PM
Colorado Springs
[expand +]		 MAN Good 38 Ozone 41 PPB 8-hour 10 AM
Grand Junction
[expand +]		 GJPB Good 15 Particulate < 2.5 micrometers 4 µg/m3 24-hour 12 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 19 Ozone 20 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 25 Ozone 27 PPB 8-hour 1 AM
Other
[expand +]		 ASPN Good 27 Ozone 29 PPB 8-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 50 0.050 0.051 11 AM

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