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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 10/25/25 (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 +]		 ADB Good 50 Particulate < 10 micrometers 54 µg/m3 24-hour 8 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 58 Particulate < 2.5 micrometers 12 µg/m3 24-hour 8 AM
Colorado Springs
[expand +]		 MAN Good 39 Ozone 42 PPB 8-hour 8 AM
Grand Junction
[expand +]		 GJPB Good 17 Particulate < 2.5 micrometers 3 µg/m3 24-hour 8 AM
Pueblo
[expand +]		 PFS Good 46 Particulate < 10 micrometers 50 µg/m3 24-hour 8 AM
Colorado River Valley
[expand +]		 RIFL Good 14 Particulate < 2.5 micrometers 2 µg/m3 24-hour 8 AM
Four Corners
[expand +]		 CTZ Good 12 Ozone 13 PPB 8-hour 8 AM
Steamboat Springs
[expand +]		 SSMB Good 16 Particulate < 2.5 micrometers 2 µg/m3 24-hour 8 AM
Aspen
[expand +]		 ASPN Good 18 Ozone 19 PPB 8-hour 8 AM
Other
[expand +]		 LMB Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 8 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 +]		 WBY Moderate 58 Particulate < 10 micrometers 69 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 59 Particulate < 2.5 micrometers 13 µg/m3 24-hour 5 AM
Colorado Springs
[expand +]		 MAN Good 39 Ozone 42 PPB 8-hour 7 AM
Grand Junction
[expand +]		 PAL Good 24 Ozone 26 PPB 8-hour 1 AM
Pueblo
[expand +]		 PFS Moderate 52 Particulate < 10 micrometers 57 µg/m3 24-hour 3 AM
Colorado River Valley
[expand +]		 RIFL Good 15 Particulate < 2.5 micrometers 2 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 CTZ Good 25 Ozone 27 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 16 Particulate < 2.5 micrometers 2 µg/m3 24-hour 8 AM
Aspen
[expand +]		 ASPN Good 21 Ozone 23 PPB 8-hour 1 AM
Other
[expand +]		 LMB Good 41 Particulate < 2.5 micrometers 7 µg/m3 24-hour 5 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