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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 12/14/25 (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 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 10 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 60 Particulate < 2.5 micrometers 13 µg/m3 24-hour 10 PM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 33 PPB 8-hour 10 PM
Grand Junction
[expand +]		 GJPB Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 10 PM
Pueblo
[expand +]		 PFS Good 47 Particulate < 2.5 micrometers 8 µg/m3 24-hour 10 PM
Colorado River Valley
[expand +]		 RIFL Good 27 Particulate < 2.5 micrometers 4 µg/m3 24-hour 10 PM
Four Corners
[expand +]		 PAG Good 27 Particulate < 2.5 micrometers 4 µg/m3 24-hour 10 PM
Steamboat Springs
[expand +]		 SSMB Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 10 PM
Aspen
[expand +]		 ASPN2 Moderate 54 Particulate < 10 micrometers 62 µg/m3 24-hour 10 PM
Other
[expand +]		 DELT Good 44 Particulate < 2.5 micrometers 7 µg/m3 24-hour 10 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 +]		 LNGM Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 8 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 60 Particulate < 2.5 micrometers 13 µg/m3 24-hour 10 PM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 34 PPB 8-hour 3 PM
Grand Junction
[expand +]		 GJPB Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Pueblo
[expand +]		 PFS Good 47 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Colorado River Valley
[expand +]		 RIFL Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 11 AM
Four Corners
[expand +]		 CTZ Good 29 Ozone 31 PPB 8-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 4 PM
Aspen
[expand +]		 ASPN2 Moderate 57 Particulate < 10 micrometers 67 µg/m3 24-hour 5 PM
Other
[expand +]		 DELT 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 Good 44 0.046 0.034 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