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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 12/22/24 (Today)

Air Quality Forecasts and Advisories & Colorado Smoke Outlook
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.		 Current Air Quality

Current Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 LNGM Moderate 52 Particulate < 2.5 micrometers 10 µg/m3 24-hour 10 PM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 60 Particulate < 2.5 micrometers 14 µg/m3 24-hour 10 PM
Colorado Springs
[expand +]		 MAN Good 33 Ozone 36 PPB 8-hour 10 PM
Grand Junction
[expand +]		 GJPB Moderate 61 Particulate < 2.5 micrometers 15 µg/m3 24-hour 10 PM
Pueblo
[expand +]		 PWES Good 27 Ozone 29 PPB 8-hour 10 PM
Colorado River Valley
[expand +]		 RIFL Good 32 Particulate < 2.5 micrometers 6 µg/m3 24-hour 10 PM
Four Corners
[expand +]		 CTZ Good 23 Ozone 25 PPB 8-hour 10 PM
Other
[expand +]		 ALA Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 10 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 LNGM Moderate 56 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 62 Particulate < 2.5 micrometers 15 µg/m3 24-hour 6 PM
Colorado Springs
[expand +]		 MAN Good 38 Ozone 41 PPB 8-hour 1 AM
Grand Junction
[expand +]		 GJPB Moderate 64 Particulate < 2.5 micrometers 16 µg/m3 24-hour 4 PM
Pueblo
[expand +]		 PWES Good 36 Ozone 39 PPB 8-hour 1 PM
Colorado River Valley
[expand +]		 RIFL Good 32 Particulate < 2.5 micrometers 6 µg/m3 24-hour 10 PM
Four Corners
[expand +]		 CTZ Good 31 Ozone 33 PPB 8-hour 4 PM
Other
[expand +]		 ALA Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 8 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 28 0.032 0.039 4 PM

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

AQI health statements
Site information and abbreviations