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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 12/30/25 (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 +]		 I25GLO Moderate 54 Particulate < 2.5 micrometers 10 µg/m3 24-hour 11 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 60 Particulate < 2.5 micrometers 13 µg/m3 24-hour 11 PM
Colorado Springs
[expand +]		 MAN Good 32 Ozone 35 PPB 8-hour 11 PM
Grand Junction
[expand +]		 GJPB Good 35 Particulate < 2.5 micrometers 6 µg/m3 24-hour 11 PM
Pueblo
[expand +]		 PFS Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 11 PM
Colorado River Valley
[expand +]		 RIFL Good 26 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 PM
Four Corners
[expand +]		 PAG Good 21 Particulate < 2.5 micrometers 3 µg/m3 24-hour 11 PM
Steamboat Springs
[expand +]		 SSMB Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 11 PM
Aspen
[expand +]		 ASPN Good 31 Ozone 34 PPB 8-hour 11 PM
Other
[expand +]		 DELT Moderate 52 Particulate < 2.5 micrometers 9 µg/m3 24-hour 11 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 +]		 ADB Moderate 56 Particulate < 2.5 micrometers 11 µg/m3 24-hour 5 PM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 61 Particulate < 2.5 micrometers 14 µg/m3 24-hour 8 PM
Colorado Springs
[expand +]		 MAN Good 40 Ozone 43 PPB 8-hour 4 PM
Grand Junction
[expand +]		 GJPB Good 35 Particulate < 2.5 micrometers 6 µg/m3 24-hour 11 PM
Pueblo
[expand +]		 CAN Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFL Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 12 PM
Four Corners
[expand +]		 CTZ Good 25 Ozone 27 PPB 8-hour 5 PM
Steamboat Springs
[expand +]		 SSMB Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 8 PM
Aspen
[expand +]		 ASPN Good 36 Ozone 39 PPB 8-hour 5 AM
Other
[expand +]		 ALA Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 7 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 103 0.078 0.076 3 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