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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 01/22/25 (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 +]		 I25GLO Good 44 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Ft. Collins - Greeley
[expand +]		 FTCW Good 41 Ozone 44 PPB 8-hour 8 PM
Colorado Springs
[expand +]		 MAN Good 38 Ozone 41 PPB 8-hour 8 PM
Grand Junction
[expand +]		 GJPB Good 44 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Pueblo
[expand +]		 PWES Good 40 Ozone 43 PPB 8-hour 8 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 32 Ozone 35 PPB 8-hour 8 PM
Four Corners
[expand +]		 CTZ Good 42 Ozone 45 PPB 8-hour 8 PM
Other
[expand +]		 ALA Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 8 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 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 46 Ozone 50 PPB 8-hour 1 AM
Grand Junction
[expand +]		 GJPB Good 45 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 PM
Pueblo
[expand +]		 PWES Good 45 Ozone 49 PPB 8-hour 2 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 32 Ozone 35 PPB 8-hour 7 PM
Four Corners
[expand +]		 CTZ Good 44 Ozone 47 PPB 8-hour 7 PM
Other
[expand +]		 ALA Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 9 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 57 0.054 0.082 1 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