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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 09/10/26 (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 +]		 ADB Moderate 53 Particulate < 10 micrometers 60 µg/m3 24-hour 11 AM
Ft. Collins - Greeley
[expand +]		 MFP Good 42 Ozone 45 PPB 8-hour 11 AM
Colorado Springs
[expand +]		 ACAD Good 28 Ozone 30 PPB 8-hour 11 AM
Grand Junction
[expand +]		 PAL Good 36 Ozone 39 PPB 8-hour 11 AM
Pueblo
[expand +]		 PWES Good 31 Ozone 34 PPB 8-hour 11 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 24 Ozone 26 PPB 8-hour 11 AM
Four Corners
[expand +]		 CTZ Good 28 Ozone 30 PPB 8-hour 11 AM
Steamboat Springs
[expand +]		 SSMB Good 13 Particulate < 2.5 micrometers 2 µg/m3 24-hour 11 AM
Aspen
[expand +]		 ASPN2 Good 13 Particulate < 10 micrometers 14 µg/m3 24-hour 11 AM
Other
[expand +]		 DELT Good 22 Particulate < 10 micrometers 24 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 +]		 ADB Moderate 54 Particulate < 10 micrometers 61 µg/m3 24-hour 9 AM
Ft. Collins - Greeley
[expand +]		 MFP Good 45 Ozone 49 PPB 8-hour 1 AM
Colorado Springs
[expand +]		 ACAD Good 29 Ozone 31 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 45 Ozone 49 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 34 Ozone 37 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 32 Ozone 35 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 13 Particulate < 2.5 micrometers 2 µg/m3 24-hour 10 AM
Aspen
[expand +]		 ASPN2 Good 13 Particulate < 10 micrometers 14 µg/m3 24-hour 11 AM
Other
[expand +]		 LMB Good 22 Particulate < 2.5 micrometers 3 µg/m3 24-hour 6 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