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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 11/16/25 (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 +]		 I25DEN Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 9 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 69 Particulate < 2.5 micrometers 18 µg/m3 24-hour 9 AM
Colorado Springs
[expand +]		 CCOL Good 31 Particulate < 10 micrometers 33 µg/m3 24-hour 9 AM
Grand Junction
[expand +]		 GJPB Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 9 AM
Pueblo
[expand +]		 PFS Good 27 Particulate < 2.5 micrometers 4 µg/m3 24-hour 9 AM
Colorado River Valley
[expand +]		 RIFL Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 9 AM
Four Corners
[expand +]		 PAG Good 25 Particulate < 2.5 micrometers 4 µg/m3 24-hour 9 AM
Steamboat Springs
[expand +]		 SSMB Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 9 AM
Aspen
[expand +]		 ASPN Good 24 Ozone 26 PPB 8-hour 9 AM
Other
[expand +]		 ALA Good 49 Particulate < 2.5 micrometers 8 µg/m3 24-hour 9 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 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 9 AM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 4 AM
Colorado Springs
[expand +]		 CCOL Good 31 Particulate < 10 micrometers 33 µg/m3 24-hour 9 AM
Grand Junction
[expand +]		 GJPB Moderate 62 Particulate < 2.5 micrometers 15 µg/m3 24-hour 1 AM
Pueblo
[expand +]		 PWES Good 31 Ozone 33 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFL Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 PAG Good 30 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 30 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN Good 25 Ozone 27 PPB 8-hour 4 AM
Other
[expand +]		 DELT Moderate 55 Particulate < 2.5 micrometers 11 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