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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 11/19/24 (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 +]		 ADB Moderate 52 Particulate < 10 micrometers 58 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FOS Good 44 Ozone 47 PPB 8-hour 10 AM
Colorado Springs
[expand +]		 ACAD Good 42 Ozone 45 PPB 8-hour 8 PM
Grand Junction
[expand +]		 PAL Good 41 Ozone 44 PPB 8-hour 6 PM
Pueblo
[expand +]		 PWES Good 39 Ozone 42 PPB 8-hour 8 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 34 Ozone 37 PPB 8-hour 3 AM
Four Corners
[expand +]		 CTZ Good 38 Ozone 41 PPB 8-hour 4 PM
Other
[expand +]		 ASPN Good 40 Ozone 43 PPB 8-hour 6 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 42 0.044 0.054 1 PM

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