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Detailed Air Quality Summary for 01/17/26 (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 43 Ozone 46 PPB 8-hour 11 PM
Ft. Collins - Greeley
[expand +]		 GREH Moderate 63 Particulate < 10 micrometers 79 µg/m3 24-hour 11 PM
Colorado Springs
[expand +]		 ACAD Good 39 Ozone 42 PPB 8-hour 11 PM
Grand Junction
[expand +]		 GJPB Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 11 PM
Pueblo
[expand +]		 PWES Good 31 Ozone 34 PPB 8-hour 11 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 25 Ozone 27 PPB 8-hour 11 PM
Four Corners
[expand +]		 PAG Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 11 PM
Steamboat Springs
[expand +]		 SSMB Good 17 Particulate < 2.5 micrometers 3 µg/m3 24-hour 11 PM
Aspen
[expand +]		 ASPN Good 38 Ozone 41 PPB 8-hour 11 PM
Other
[expand +]		 LMB Good 39 Particulate < 10 micrometers 42 µg/m3 24-hour 11 PM

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       Valid data unavailable      
Ft. Collins - Greeley       Valid data unavailable      
Colorado Springs       Valid data unavailable      
Grand Junction       Valid data unavailable      
Pueblo       Valid data unavailable      
Colorado River Valley       Valid data unavailable      
Four Corners       Valid data unavailable      
Steamboat Springs       Valid data unavailable      
Aspen       Valid data unavailable      

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