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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 01/22/26 (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 +]		 RFN Good 36 Ozone 39 PPB 8-hour 8 PM
Ft. Collins - Greeley
[expand +]		 LAST Good 33 Ozone 36 PPB 8-hour 8 PM
Colorado Springs
[expand +]		 MAN Good 40 Ozone 43 PPB 8-hour 8 PM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 8 PM
Pueblo
[expand +]		 PWES Good 33 Ozone 36 PPB 8-hour 8 PM
Colorado River Valley
[expand +]		 RIFL Good 16 Particulate < 2.5 micrometers 2 µg/m3 24-hour 8 PM
Four Corners
[expand +]		 PAG Good 31 Particulate < 10 micrometers 34 µg/m3 24-hour 8 PM
Steamboat Springs
[expand +]		 SSMB Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 8 PM
Aspen
[expand +]		 ASPN2 Good 44 Particulate < 10 micrometers 47 µg/m3 24-hour 8 PM
Other
[expand +]		 DELT Moderate 64 Particulate < 2.5 micrometers 16 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 +]		 I25GLO Good 47 Nitrogen Dioxide 50 PPB 1-hour 9 AM
Ft. Collins - Greeley
[expand +]		 FTCF Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 5 AM
Colorado Springs
[expand +]		 MAN Good 42 Ozone 45 PPB 8-hour 6 PM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 8 PM
Pueblo
[expand +]		 CAN Good 35 Particulate < 2.5 micrometers 6 µg/m3 24-hour 12 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 18 Ozone 19 PPB 8-hour 6 PM
Four Corners
[expand +]		 PAG Good 31 Particulate < 10 micrometers 34 µg/m3 24-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 9 AM
Aspen
[expand +]		 ASPN2 Good 44 Particulate < 10 micrometers 47 µg/m3 24-hour 8 PM
Other
[expand +]		 DELT Moderate 65 Particulate < 2.5 micrometers 16 µg/m3 24-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 96 0.073 0.056 12 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