Colorado
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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 05/09/25 (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 +]		 CHAT Moderate 64 Ozone 59 PPB 8-hour 10 PM
Ft. Collins - Greeley
[expand +]		 FTCW Moderate 71 Ozone 61 PPB 8-hour 10 PM
Colorado Springs
[expand +]		 MAN Moderate 58 Ozone 57 PPB 8-hour 10 PM
Grand Junction
[expand +]		 PAL Good 48 Ozone 52 PPB 8-hour 10 PM
Pueblo
[expand +]		 PWES Moderate 67 Ozone 60 PPB 8-hour 10 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 39 Ozone 42 PPB 8-hour 10 PM
Four Corners
[expand +]		 CTZ Good 42 Ozone 45 PPB 8-hour 10 PM
Steamboat Springs
[expand +]		 SSMB Good 19 Particulate < 2.5 micrometers 3 µg/m3 24-hour 10 PM
Other
[expand +]		 LMB Good 29 Particulate < 2.5 micrometers 5 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      

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