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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 03/25/25 (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 55 Particulate < 10 micrometers 63 µg/m3 24-hour 12 PM
Ft. Collins - Greeley
[expand +]		 FTCW Good 37 Ozone 40 PPB 8-hour 12 PM
Colorado Springs
[expand +]		 MAN Good 31 Ozone 34 PPB 8-hour 12 PM
Grand Junction
[expand +]		 PAL Good 25 Ozone 27 PPB 8-hour 12 PM
Pueblo
[expand +]		 PWES Good 28 Ozone 30 PPB 8-hour 12 PM
Colorado River Valley
[expand +]		 RIFL Good 18 Particulate < 2.5 micrometers 3 µg/m3 24-hour 12 PM
Four Corners
[expand +]		 CTZ Good 21 Ozone 23 PPB 8-hour 12 PM
Other
[expand +]		 TEL Moderate 57 Particulate < 10 micrometers 67 µg/m3 24-hour 12 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 27 0.031 0.031 12 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 ADB Moderate 62 Particulate < 10 micrometers 77 µg/m3 24-hour 8 AM
Ft. Collins - Greeley
[expand +]		 FTC Good 37 Ozone 40 PPB 8-hour 4 AM
Colorado Springs
[expand +]		 MAN Good 34 Ozone 37 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 29 Ozone 31 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 31 Ozone 33 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 24 Ozone 26 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 22 Ozone 24 PPB 8-hour 1 AM
Other
[expand +]		 TEL Moderate 57 Particulate < 10 micrometers 67 µg/m3 24-hour 12 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 29 0.033 0.029 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