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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 12/07/25 (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 +]		 BHWK Good 43 Ozone 46 PPB 8-hour 9 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 32 Ozone 35 PPB 8-hour 9 AM
Colorado Springs
[expand +]		 MAN Good 39 Ozone 42 PPB 8-hour 9 AM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 9 AM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 9 AM
Colorado River Valley
[expand +]		 RIFL Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 9 AM
Four Corners
[expand +]		 CTZ Good 16 Ozone 17 PPB 8-hour 9 AM
Steamboat Springs
[expand +]		 SSMB Good 11 Particulate < 2.5 micrometers 1 µg/m3 24-hour 9 AM
Aspen
[expand +]		 ASPN Good 19 Ozone 21 PPB 8-hour 9 AM
Other
[expand +]		 DELT Moderate 55 Particulate < 2.5 micrometers 11 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 +]		 BHWK Good 43 Ozone 46 PPB 8-hour 6 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 36 Ozone 39 PPB 8-hour 2 AM
Colorado Springs
[expand +]		 MAN Good 40 Ozone 43 PPB 8-hour 5 AM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 6 AM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 8 AM
Colorado River Valley
[expand +]		 RIFL Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 9 AM
Four Corners
[expand +]		 CTZ Good 20 Ozone 22 PPB 8-hour 5 AM
Steamboat Springs
[expand +]		 SSMB Good 11 Particulate < 2.5 micrometers 1 µg/m3 24-hour 9 AM
Aspen
[expand +]		 ASPN Good 26 Ozone 28 PPB 8-hour 1 AM
Other
[expand +]		 DELT Moderate 55 Particulate < 2.5 micrometers 11 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