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Banner with Colorado and CDPHE logos on left with text on right reading Colorado Air Quality with Department of Public Health and Environment on the next line.

Detailed Air Quality Summary for 07/15/24 (Yesterday)

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 +]		 WBY Moderate 77 Ozone 63 PPB 8-hour 4 PM
Ft. Collins - Greeley
[expand +]		 FTCW Moderate 58 Ozone 57 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 77 Ozone 63 PPB 8-hour 7 PM
Grand Junction
[expand +]		 PAL Moderate 58 Ozone 57 PPB 8-hour 7 PM
Pueblo
[expand +]		 PWES Moderate 58 Ozone 57 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 48 Ozone 52 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Moderate 51 Ozone 55 PPB 8-hour 5 PM
Other
[expand +]		 LMB Good 49 Particulate < 2.5 micrometers 9 µg/m3 24-hour 3 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 48 0.048 0.058 3 PM

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