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Detailed Air Quality Summary for 07/22/17

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 +]		 HLD Unhealthy for Sensitive Groups 108 Ozone 74 PPB 8-hour 7 PM
Ft. Collins - Greeley
[expand +]		 GRET Unhealthy for Sensitive Groups 104 Ozone 72 PPB 8-hour 7 PM
Colorado Springs
[expand +]		 ACAD Moderate 77 Ozone 63 PPB 8-hour 7 PM
Grand Junction
[expand +]		 PAL Moderate 61 Ozone 58 PPB 8-hour 9 PM
Pueblo       Valid data unavailable      
Colorado River Valley
[expand +]		 RIFLO3 Good 49 Ozone 54 PPB 8-hour 8 PM
Four Corners
[expand +]		 CTZ Good 44 Ozone 47 PPB 8-hour 8 PM
Other
[expand +]		 ELK Moderate 67 Ozone 60 PPB 8-hour 9 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 39 0.041 0.040 11 AM

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