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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 01/01/26 (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 59 Particulate < 2.5 micrometers 13 µg/m3 24-hour 3 PM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 71 Particulate < 2.5 micrometers 19 µg/m3 24-hour 3 PM
Colorado Springs
[expand +]		 ACAD Good 38 Ozone 41 PPB 8-hour 3 PM
Grand Junction
[expand +]		 GJPB Moderate 60 Particulate < 2.5 micrometers 14 µg/m3 24-hour 3 PM
Pueblo
[expand +]		 PWES Good 35 Ozone 38 PPB 8-hour 3 PM
Colorado River Valley
[expand +]		 RIFL Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 PM
Four Corners
[expand +]		 PAG Good 33 Particulate < 2.5 micrometers 6 µg/m3 24-hour 3 PM
Steamboat Springs
[expand +]		 SSMB Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 3 PM
Aspen
[expand +]		 ASPN2 Good 38 Particulate < 2.5 micrometers 6 µg/m3 24-hour 3 PM
Other
[expand +]		 ALA Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 3 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 48 0.048 0.061 3 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 LNGM Moderate 59 Particulate < 2.5 micrometers 13 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 72 Particulate < 2.5 micrometers 20 µg/m3 24-hour 9 AM
Colorado Springs
[expand +]		 ACAD Good 38 Ozone 41 PPB 8-hour 2 PM
Grand Junction
[expand +]		 GJPB Moderate 60 Particulate < 2.5 micrometers 14 µg/m3 24-hour 2 PM
Pueblo
[expand +]		 PFS Good 35 Particulate < 2.5 micrometers 6 µg/m3 24-hour 9 AM
Colorado River Valley
[expand +]		 RIFL Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 12 PM
Four Corners
[expand +]		 PAG Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 PM
Steamboat Springs
[expand +]		 SSMB Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 5 AM
Aspen
[expand +]		 ASPN2 Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Other
[expand +]		 ALA Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 48 0.048 0.061 3 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