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Detailed Air Quality Summary for 07/21/14

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 +]		 RFN Moderate 54 Ozone 61 PPB 8-hour 8 PM
Ft. Collins - Greeley
[expand +]		 GREH Good 44 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 ACAD Good 42 Ozone 49 PPB 8-hour 4 PM
Grand Junction
[expand +]		 PAL Good 37 Ozone 44 PPB 8-hour 10 PM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 36 Ozone 43 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 31 Ozone 36 PPB 8-hour 6 PM
Other
[expand +]		 DELT Good 48 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 89 0.070 0.063 11 AM
Ft. Collins - Greeley DMA Poor 119 0.090 0.069 11 AM

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