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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 10/08/25 (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 +]		 ADB Moderate 60 Particulate < 2.5 micrometers 14 µg/m3 24-hour 5 PM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 5 PM
Colorado Springs
[expand +]		 ACAD Good 33 Ozone 36 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Good 37 Ozone 40 PPB 8-hour 5 PM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 5 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 30 Ozone 32 PPB 8-hour 5 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 5 PM
Steamboat Springs
[expand +]		 SSMB Good 18 Particulate < 2.5 micrometers 3 µg/m3 24-hour 5 PM
Aspen
[expand +]		 ASPN Good 35 Ozone 38 PPB 8-hour 5 PM
Other
[expand +]		 ALA Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 5 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 +]		 CAMP Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 9 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 1 PM
Colorado Springs
[expand +]		 ACAD Good 33 Ozone 36 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Good 37 Ozone 40 PPB 8-hour 5 PM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 5 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 30 Ozone 32 PPB 8-hour 5 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 5 PM
Steamboat Springs
[expand +]		 SSMB Good 20 Particulate < 2.5 micrometers 3 µg/m3 24-hour 8 AM
Aspen
[expand +]		 ASPN Good 35 Ozone 38 PPB 8-hour 5 PM
Other
[expand +]		 ALA Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 10 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 118 0.089 0.054 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