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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 03/12/25 (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 +]		 NREL Moderate 58 Ozone 57 PPB 8-hour 9 PM
Ft. Collins - Greeley
[expand +]		 FTCW Moderate 64 Ozone 59 PPB 8-hour 9 PM
Colorado Springs
[expand +]		 MAN Moderate 51 Ozone 55 PPB 8-hour 9 PM
Grand Junction
[expand +]		 PAL Good 44 Ozone 48 PPB 8-hour 9 PM
Pueblo
[expand +]		 PWES Good 47 Ozone 51 PPB 8-hour 9 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 33 Ozone 36 PPB 8-hour 9 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 9 PM
Other
[expand +]		 ASPN Good 44 Ozone 48 PPB 8-hour 9 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 AURE Moderate 67 Ozone 60 PPB 8-hour 5 PM
Ft. Collins - Greeley
[expand +]		 GRET Moderate 71 Ozone 61 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 67 Ozone 60 PPB 8-hour 5 PM
Grand Junction
[expand +]		 GJPB Moderate 54 Particulate < 2.5 micrometers 11 µg/m3 24-hour 12 PM
Pueblo
[expand +]		 PWES Moderate 54 Ozone 56 PPB 8-hour 5 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 44 Ozone 47 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 40 Ozone 43 PPB 8-hour 7 PM
Other
[expand +]		 TEL Good 50 Particulate < 10 micrometers 54 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 54 0.053 0.046 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