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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 08/17/25 (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 6 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 84 Particulate < 2.5 micrometers 26 µg/m3 24-hour 6 AM
Colorado Springs
[expand +]		 MAN Good 41 Ozone 44 PPB 8-hour 6 AM
Grand Junction
[expand +]		 PAL Good 30 Ozone 32 PPB 8-hour 6 AM
Pueblo
[expand +]		 PFS Good 41 Particulate < 2.5 micrometers 7 µg/m3 24-hour 6 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 18 Ozone 19 PPB 8-hour 6 AM
Four Corners
[expand +]		 PAG Good 25 Particulate < 2.5 micrometers 4 µg/m3 24-hour 6 AM
Steamboat Springs
[expand +]		 SSMB Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 6 AM
Aspen
[expand +]		 ASPN2 Good 30 Particulate < 2.5 micrometers 5 µg/m3 24-hour 6 AM
Other
[expand +]		 ALA Good 36 Particulate < 2.5 micrometers 6 µg/m3 24-hour 6 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 +]		 ADB Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 2 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 87 Particulate < 2.5 micrometers 28 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 CCOL Good 48 Particulate < 2.5 micrometers 8 µg/m3 24-hour 1 AM
Grand Junction
[expand +]		 PAL Good 36 Ozone 39 PPB 8-hour 1 AM
Pueblo
[expand +]		 PFS Good 45 Particulate < 2.5 micrometers 8 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 25 Ozone 27 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 30 Ozone 32 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN2 Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 2 AM
Other
[expand +]		 LMB Good 39 Particulate < 2.5 micrometers 7 µg/m3 24-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