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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 07/15/26 (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 100 Ozone 70 PPB 8-hour 10 PM
Ft. Collins - Greeley
[expand +]		 FOS Moderate 61 Ozone 58 PPB 8-hour 10 PM
Colorado Springs
[expand +]		 MAN Moderate 67 Ozone 60 PPB 8-hour 10 PM
Grand Junction
[expand +]		 PAL Good 48 Ozone 52 PPB 8-hour 10 PM
Pueblo
[expand +]		 PWES Moderate 58 Ozone 57 PPB 8-hour 10 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 35 Ozone 38 PPB 8-hour 10 PM
Four Corners
[expand +]		 CTZ Good 43 Ozone 46 PPB 8-hour 10 PM
Steamboat Springs
[expand +]		 SSMB Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 10 PM
Aspen
[expand +]		 ASPN2 Good 42 Particulate < 2.5 micrometers 7 µg/m3 24-hour 10 PM
Other
[expand +]		 TEL Moderate 98 Particulate < 2.5 micrometers 34 µg/m3 24-hour 10 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