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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 Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 2 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 2 AM
Colorado Springs
[expand +]		 MAN Good 32 Ozone 35 PPB 8-hour 2 AM
Grand Junction
[expand +]		 GJPB Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 2 AM
Pueblo
[expand +]		 PWES Good 24 Ozone 26 PPB 8-hour 2 AM
Colorado River Valley
[expand +]		 RIFL Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 2 AM
Four Corners
[expand +]		 PAG Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 2 AM
Steamboat Springs
[expand +]		 SSMB Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 2 AM
Aspen
[expand +]		 ASPN2 Good 20 Particulate < 2.5 micrometers 3 µg/m3 24-hour 2 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)
No valid VSI calculations found (12pm - 4pm)

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 25 Ozone 27 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFL Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 PAG Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN2 Good 20 Particulate < 2.5 micrometers 3 µg/m3 24-hour 2 AM
Other
[expand +]		 ALA Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

* 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