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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 03/24/25 (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 +]		 ADB Moderate 58 Particulate < 10 micrometers 69 µg/m3 24-hour 3 PM
Ft. Collins - Greeley
[expand +]		 FTCW Good 36 Ozone 39 PPB 8-hour 3 PM
Colorado Springs
[expand +]		 MAN Good 37 Ozone 40 PPB 8-hour 3 PM
Grand Junction
[expand +]		 PAL Good 34 Ozone 37 PPB 8-hour 3 PM
Pueblo
[expand +]		 PWES Good 37 Ozone 40 PPB 8-hour 3 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 29 Ozone 31 PPB 8-hour 3 PM
Four Corners
[expand +]		 CTZ Good 31 Ozone 34 PPB 8-hour 3 PM
Other
[expand +]		 TEL Good 44 Particulate < 10 micrometers 48 µg/m3 24-hour 3 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 9 0.018 0.020 3 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 ADB Moderate 58 Particulate < 10 micrometers 69 µg/m3 24-hour 3 PM
Ft. Collins - Greeley
[expand +]		 FTCW Good 42 Ozone 45 PPB 8-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 37 Ozone 40 PPB 8-hour 9 AM
Grand Junction
[expand +]		 PAL Good 34 Ozone 37 PPB 8-hour 3 PM
Pueblo
[expand +]		 PWES Good 37 Ozone 40 PPB 8-hour 3 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 29 Ozone 31 PPB 8-hour 3 PM
Four Corners
[expand +]		 CTZ Good 31 Ozone 34 PPB 8-hour 3 PM
Other
[expand +]		 TEL Good 44 Particulate < 10 micrometers 47 µg/m3 24-hour 2 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 13 0.021 0.017 11 AM

* 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