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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 08/11/26 (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 +]		 NREL Moderate 90 Ozone 67 PPB 8-hour 4 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 66 Particulate < 2.5 micrometers 17 µg/m3 24-hour 4 AM
Colorado Springs
[expand +]		 ACAD Moderate 90 Ozone 67 PPB 8-hour 4 AM
Grand Junction
[expand +]		 PAL Good 48 Ozone 52 PPB 8-hour 4 AM
Pueblo
[expand +]		 CAN Moderate 59 Particulate < 2.5 micrometers 13 µg/m3 24-hour 4 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 37 Ozone 40 PPB 8-hour 4 AM
Four Corners
[expand +]		 PAG Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 4 AM
Steamboat Springs
[expand +]		 SSMB Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 4 AM
Aspen
[expand +]		 ASPN2 Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 4 AM
Other
[expand +]		 ALA Moderate 62 Particulate < 2.5 micrometers 14 µg/m3 24-hour 4 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 +]		 NREL Moderate 90 Ozone 67 PPB 8-hour 2 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 66 Particulate < 2.5 micrometers 17 µg/m3 24-hour 2 AM
Colorado Springs
[expand +]		 ACAD Moderate 93 Ozone 68 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Moderate 61 Ozone 58 PPB 8-hour 1 AM
Pueblo
[expand +]		 CAN Moderate 60 Particulate < 2.5 micrometers 13 µg/m3 24-hour 2 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 48 Ozone 52 PPB 8-hour 1 AM
Four Corners
[expand +]		 PAG Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 2 AM
Aspen
[expand +]		 ASPN2 Moderate 59 Particulate < 2.5 micrometers 13 µg/m3 24-hour 1 AM
Other
[expand +]		 ALA Moderate 62 Particulate < 2.5 micrometers 14 µg/m3 24-hour 4 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