Colorado
Translate
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 10/16/26 (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 +]		 BHWK Good 32 Ozone 35 PPB 8-hour 11 AM
Ft. Collins - Greeley
[expand +]		 LAST Good 26 Ozone 28 PPB 8-hour 11 AM
Colorado Springs
[expand +]		 ACAD Good 30 Ozone 32 PPB 8-hour 11 AM
Grand Junction
[expand +]		 PAL Good 22 Ozone 24 PPB 8-hour 11 AM
Pueblo
[expand +]		 PWES Good 24 Ozone 26 PPB 8-hour 11 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 16 Ozone 17 PPB 8-hour 11 AM
Four Corners
[expand +]		 CTZ Good 15 Ozone 16 PPB 8-hour 11 AM
Steamboat Springs
[expand +]		 SSMB Good 17 Particulate < 2.5 micrometers 3 µg/m3 24-hour 11 AM
Aspen
[expand +]		 ASPN2 Good 13 Particulate < 2.5 micrometers 2 µg/m3 24-hour 11 AM
Other
[expand +]		 ALA Good 22 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 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 Good 33 Nitrogen Dioxide 35 PPB 1-hour 7 AM
Ft. Collins - Greeley
[expand +]		 GRET Good 31 Ozone 33 PPB 8-hour 4 AM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 33 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 28 Ozone 30 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 24 Ozone 26 PPB 8-hour 11 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 22 Ozone 24 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 16 Ozone 17 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 17 Particulate < 2.5 micrometers 3 µg/m3 24-hour 10 AM
Aspen
[expand +]		 ASPN2 Good 13 Particulate < 2.5 micrometers 2 µg/m3 24-hour 8 AM
Other
[expand +]		 ALA Good 22 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 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