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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 07/03/26 (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 +]		 BOU Moderate 72 Particulate < 2.5 micrometers 20 µg/m3 24-hour 12 PM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 62 Particulate < 2.5 micrometers 15 µg/m3 24-hour 12 PM
Colorado Springs
[expand +]		 CCOL Moderate 79 Particulate < 2.5 micrometers 24 µg/m3 24-hour 12 PM
Grand Junction
[expand +]		 GJPB Moderate 64 Particulate < 2.5 micrometers 16 µg/m3 24-hour 12 PM
Pueblo
[expand +]		 CAN Unhealthy for Sensitive Groups 102 Particulate < 2.5 micrometers 36 µg/m3 24-hour 12 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 37 Ozone 40 PPB 8-hour 12 PM
Four Corners
[expand +]		 CTZ Good 38 Ozone 41 PPB 8-hour 12 PM
Steamboat Springs
[expand +]		 SSMB Moderate 72 Particulate < 2.5 micrometers 20 µg/m3 24-hour 12 PM
Aspen
[expand +]		 ASPN2 Moderate 94 Particulate < 2.5 micrometers 32 µg/m3 24-hour 12 PM
Other
[expand +]		 DELT Unhealthy for Sensitive Groups 137 Particulate < 2.5 micrometers 50 µg/m3 24-hour 12 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 RFN Moderate 100 Ozone 70 PPB 8-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTCF Moderate 66 Particulate < 2.5 micrometers 16 µg/m3 24-hour 2 AM
Colorado Springs
[expand +]		 CCOL Moderate 79 Particulate < 2.5 micrometers 24 µg/m3 24-hour 12 PM
Grand Junction
[expand +]		 GJPB Moderate 69 Particulate < 2.5 micrometers 18 µg/m3 24-hour 2 AM
Pueblo
[expand +]		 CAN Unhealthy for Sensitive Groups 102 Particulate < 2.5 micrometers 35 µg/m3 24-hour 11 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 37 Ozone 40 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 40 Ozone 43 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Moderate 81 Particulate < 2.5 micrometers 25 µg/m3 24-hour 5 AM
Aspen
[expand +]		 ASPN2 Unhealthy for Sensitive Groups 111 Particulate < 2.5 micrometers 39 µg/m3 24-hour 1 AM
Other
[expand +]		 DELT Unhealthy 152 Particulate < 2.5 micrometers 56 µg/m3 24-hour 8 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Poor 103 0.078 0.071 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