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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 04/29/25 (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 +]		 AURE Good 48 Ozone 52 PPB 8-hour 4 PM
Ft. Collins - Greeley
[expand +]		 TIM Good 50 Ozone 54 PPB 8-hour 4 PM
Colorado Springs
[expand +]		 MAN Good 42 Ozone 45 PPB 8-hour 4 PM
Grand Junction
[expand +]		 PAL Good 50 Ozone 54 PPB 8-hour 4 PM
Pueblo
[expand +]		 PWES Good 44 Ozone 48 PPB 8-hour 4 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 44 Ozone 48 PPB 8-hour 4 PM
Four Corners
[expand +]		 CTZ Good 49 Ozone 53 PPB 8-hour 4 PM
Other
[expand +]		 ASPN Good 50 Ozone 54 PPB 8-hour 4 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 Good 48 Ozone 52 PPB 8-hour 4 PM
Ft. Collins - Greeley
[expand +]		 TIM Good 50 Ozone 54 PPB 8-hour 4 PM
Colorado Springs
[expand +]		 MAN Good 45 Ozone 49 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 50 Ozone 54 PPB 8-hour 4 PM
Pueblo
[expand +]		 PWES Good 46 Ozone 50 PPB 8-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 44 Ozone 48 PPB 8-hour 4 PM
Four Corners
[expand +]		 CTZ Good 49 Ozone 53 PPB 8-hour 4 PM
Other
[expand +]		 ASPN Good 50 Ozone 54 PPB 8-hour 4 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 46 0.047 0.042 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