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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 01/31/26 (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 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 11 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 11 AM
Colorado Springs
[expand +]		 CCOL Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 11 AM
Grand Junction
[expand +]		 GJPB Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 11 AM
Pueblo
[expand +]		 CAN Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 11 AM
Colorado River Valley
[expand +]		 RIFL Good 23 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 AM
Four Corners
[expand +]		 PAG Good 23 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 AM
Steamboat Springs
[expand +]		 SSMB Good 19 Particulate < 2.5 micrometers 3 µg/m3 24-hour 11 AM
Aspen
[expand +]		 ASPN Good 28 Ozone 30 PPB 8-hour 11 AM
Other
[expand +]		 DELT Good 43 Particulate < 2.5 micrometers 7 µg/m3 24-hour 11 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 +]		 LNGM Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 11 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 11 AM
Colorado Springs
[expand +]		 CCOL Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 11 AM
Grand Junction
[expand +]		 GJPB Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 9 AM
Pueblo
[expand +]		 CAN Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 11 AM
Colorado River Valley
[expand +]		 RIFL Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 7 AM
Four Corners
[expand +]		 CTZ Good 26 Ozone 28 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 22 Particulate < 2.5 micrometers 3 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN Good 34 Ozone 37 PPB 8-hour 4 AM
Other
[expand +]		 DELT Good 44 Particulate < 2.5 micrometers 8 µg/m3 24-hour 7 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