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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 03/23/25 (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 +]		 BHWK Good 43 Ozone 46 PPB 8-hour 4 AM
Ft. Collins - Greeley
[expand +]		 FTC Good 44 Ozone 48 PPB 8-hour 4 AM
Colorado Springs
[expand +]		 MAN Good 43 Ozone 46 PPB 8-hour 4 AM
Grand Junction
[expand +]		 PAL Good 32 Ozone 35 PPB 8-hour 4 AM
Pueblo
[expand +]		 PWES Good 40 Ozone 43 PPB 8-hour 4 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 28 Ozone 30 PPB 8-hour 4 AM
Four Corners
[expand +]		 CTZ Good 19 Ozone 21 PPB 8-hour 4 AM
Other
[expand +]		 ASPN Good 37 Ozone 40 PPB 8-hour 4 AM

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 METRO
[expand +]		 NREL Good 44 Ozone 47 PPB 8-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTC Good 44 Ozone 48 PPB 8-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 44 Ozone 48 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 37 Ozone 40 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 43 Ozone 46 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 33 Ozone 36 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 26 Ozone 28 PPB 8-hour 1 AM
Other
[expand +]		 ASPN Good 40 Ozone 43 PPB 8-hour 1 AM

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