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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 08/02/25 (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 +]		 I25GLO Moderate 56 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 CCOL Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Grand Junction
[expand +]		 PAL Good 36 Ozone 39 PPB 8-hour 1 AM
Pueblo
[expand +]		 PFS Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 32 Ozone 35 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 31 Ozone 34 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN2 Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 AM
Other
[expand +]		 LMB Good 36 Particulate < 2.5 micrometers 6 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)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 I25GLO Moderate 56 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 55 Particulate < 2.5 micrometers 11 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]		 CCOL Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 1 AM
Grand Junction
[expand +]		 PAL Good 36 Ozone 39 PPB 8-hour 1 AM
Pueblo
[expand +]		 PFS Moderate 51 Particulate < 2.5 micrometers 9 µg/m3 24-hour 1 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 32 Ozone 35 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 31 Ozone 34 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 33 Particulate < 2.5 micrometers 5 µg/m3 24-hour 1 AM
Aspen
[expand +]		 ASPN2 Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 AM
Other
[expand +]		 LMB Good 36 Particulate < 2.5 micrometers 6 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