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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 7 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 7 PM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 33 PPB 8-hour 7 PM
Grand Junction
[expand +]		 GJPB Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 7 PM
Pueblo
[expand +]		 PFS Good 43 Particulate < 2.5 micrometers 7 µg/m3 24-hour 7 PM
Colorado River Valley
[expand +]		 RIFL Good 26 Particulate < 2.5 micrometers 4 µg/m3 24-hour 7 PM
Four Corners
[expand +]		 CTZ Good 28 Ozone 30 PPB 8-hour 7 PM
Steamboat Springs
[expand +]		 SSMB Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 7 PM
Aspen
[expand +]		 ASPN2 Moderate 56 Particulate < 10 micrometers 65 µg/m3 24-hour 7 PM
Other
[expand +]		 DELT Good 48 Particulate < 2.5 micrometers 8 µg/m3 24-hour 7 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 7 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 7 PM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 33 PPB 8-hour 5 PM
Grand Junction
[expand +]		 GJPB Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Pueblo
[expand +]		 PFS Good 43 Particulate < 2.5 micrometers 7 µg/m3 24-hour 7 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