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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 08/24/25 (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 +]		 LNGM Good 48 Particulate < 2.5 micrometers 8 µg/m3 24-hour 3 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 3 AM
Colorado Springs
[expand +]		 CCOL Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 AM
Grand Junction
[expand +]		 PAL Good 38 Ozone 41 PPB 8-hour 3 AM
Pueblo
[expand +]		 PFS Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 AM
Colorado River Valley
[expand +]		 RIFL Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 AM
Four Corners
[expand +]		 CTZ Good 32 Ozone 35 PPB 8-hour 3 AM
Steamboat Springs
[expand +]		 SSMB Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 3 AM
Aspen
[expand +]		 ASPN Good 31 Ozone 33 PPB 8-hour 3 AM
Other
[expand +]		 LMB Good 33 Particulate < 2.5 micrometers 6 µg/m3 24-hour 3 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 +]		 RFN Good 48 Ozone 52 PPB 8-hour 1 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 3 AM
Colorado Springs
[expand +]		 CCOL Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 AM
Grand Junction
[expand +]		 PAL Good 42 Ozone 45 PPB 8-hour 1 AM
Pueblo
[expand +]		 PFS Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3 AM
Colorado River Valley
[expand +]		 RIFL Good 41 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 CTZ Good 34 Ozone 37 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 3 AM
Aspen
[expand +]		 ASPN Good 32 Ozone 35 PPB 8-hour 1 AM
Other
[expand +]		 LMB Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 2 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