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Detailed Air Quality Summary for 02/23/18

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.

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 CHAT Unhealthy for Sensitive Groups 125 Particulate < 2.5 micrometers 45 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 GREH Unhealthy for Sensitive Groups 118 Particulate < 2.5 micrometers 42 µg/m3 24-hour 6 PM
Colorado Springs
[expand +]		 CCOL Moderate 86 Particulate < 2.5 micrometers 29 µg/m3 24-hour 11 AM
Grand Junction
[expand +]		 PAL Good 44 Ozone 47 PPB 8-hour 6 PM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFL Good 20 Particulate < 2.5 micrometers 5 µg/m3 24-hour 11 PM
Four Corners
[expand +]		 CTZ Good 44 Ozone 47 PPB 8-hour 4 PM
Other
[expand +]		 ASPN Good 46 Ozone 50 PPB 8-hour 6 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Ext Poor 207 0.200 0.190 2 PM

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