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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 01/02/26 (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 +]		 I25DEN Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 8 PM
Ft. Collins - Greeley
[expand +]		 PMS Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 8 PM
Colorado Springs
[expand +]		 MAN Good 32 Ozone 35 PPB 8-hour 8 PM
Grand Junction
[expand +]		 GJPB Good 46 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Pueblo
[expand +]		 PWES Good 31 Ozone 34 PPB 8-hour 8 PM
Colorado River Valley
[expand +]		 RIFL Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 8 PM
Four Corners
[expand +]		 CTZ Good 27 Ozone 29 PPB 8-hour 8 PM
Steamboat Springs
[expand +]		 SSMB Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 8 PM
Aspen
[expand +]		 ASPN2 Good 23 Particulate < 2.5 micrometers 4 µg/m3 24-hour 8 PM
Other
[expand +]		 DELT Good 42 Particulate < 2.5 micrometers 7 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 +]		 I25DEN Moderate 54 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 65 Particulate < 2.5 micrometers 16 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 32 Ozone 35 PPB 8-hour 2 AM
Grand Junction
[expand +]		 GJPB Moderate 54 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Pueblo
[expand +]		 PWES Good 32 Ozone 35 PPB 8-hour 7 PM
Colorado River Valley
[expand +]		 RIFL Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 8 PM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 5 PM
Steamboat Springs
[expand +]		 SSMB Good 35 Particulate < 2.5 micrometers 6 µg/m3 24-hour 5 AM
Aspen
[expand +]		 ASPN2 Good 25 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 AM
Other
[expand +]		 ALA Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 2 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 68 0.060 0.052 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