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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 01/16/26 (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 +]		 AURE Good 44 Ozone 47 PPB 8-hour 10 PM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 63 Particulate < 10 micrometers 80 µg/m3 24-hour 10 PM
Colorado Springs
[expand +]		 ACAD Good 39 Ozone 42 PPB 8-hour 10 PM
Grand Junction
[expand +]		 GJPB Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 10 PM
Pueblo
[expand +]		 PFS Good 36 Particulate < 10 micrometers 39 µg/m3 24-hour 10 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 28 Ozone 30 PPB 8-hour 10 PM
Four Corners
[expand +]		 PAG Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 10 PM
Steamboat Springs
[expand +]		 SSMB Good 18 Particulate < 2.5 micrometers 3 µg/m3 24-hour 10 PM
Aspen
[expand +]		 ASPN Good 38 Ozone 41 PPB 8-hour 10 PM
Other
[expand +]		 LMB Good 47 Particulate < 10 micrometers 51 µg/m3 24-hour 10 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 53 Particulate < 10 micrometers 59 µg/m3 24-hour 8 PM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 68 Particulate < 10 micrometers 89 µg/m3 24-hour 5 PM
Colorado Springs
[expand +]		 MAN Good 42 Ozone 45 PPB 8-hour 1 AM
Grand Junction
[expand +]		 GJPB Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 10 AM
Pueblo
[expand +]		 PWES Good 40 Ozone 43 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 31 Ozone 33 PPB 8-hour 8 PM
Four Corners
[expand +]		 PAG Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 10 AM
Steamboat Springs
[expand +]		 SSMB Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN Good 38 Ozone 41 PPB 8-hour 9 PM
Other
[expand +]		 LMB Good 47 Particulate < 10 micrometers 51 µg/m3 24-hour 10 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 58 0.055 0.044 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