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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 07/05/25 (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 Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 2 PM
Ft. Collins - Greeley
[expand +]		 LAST Good 48 Ozone 52 PPB 8-hour 2 PM
Colorado Springs
[expand +]		 MAN Good 50 Ozone 54 PPB 8-hour 2 PM
Grand Junction
[expand +]		 PAL Good 42 Ozone 45 PPB 8-hour 2 PM
Pueblo
[expand +]		 PFS Moderate 85 Particulate < 2.5 micrometers 27 µg/m3 24-hour 2 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 35 Ozone 38 PPB 8-hour 2 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 2 PM
Steamboat Springs
[expand +]		 SSMB Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 2 PM
Other
[expand +]		 DELT Good 48 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 36 0.039 0.039 2 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 ADB Moderate 57 Particulate < 2.5 micrometers 12 µg/m3 24-hour 10 AM
Ft. Collins - Greeley
[expand +]		 LAST Good 48 Ozone 52 PPB 8-hour 2 PM
Colorado Springs
[expand +]		 MAN Good 50 Ozone 54 PPB 8-hour 2 PM
Grand Junction
[expand +]		 GJPB Good 43 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Pueblo
[expand +]		 PFS Moderate 85 Particulate < 2.5 micrometers 27 µg/m3 24-hour 11 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 35 Ozone 38 PPB 8-hour 2 PM
Four Corners
[expand +]		 CTZ Good 36 Ozone 39 PPB 8-hour 2 PM
Steamboat Springs
[expand +]		 SSMB Good 27 Particulate < 2.5 micrometers 4 µg/m3 24-hour 4 AM
Other
[expand +]		 DELT Good 49 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 38 0.040 0.036 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