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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 06/30/26 (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 +]		 BHWK Moderate 61 Ozone 58 PPB 8-hour 8 PM
Ft. Collins - Greeley
[expand +]		 FOS Moderate 58 Ozone 57 PPB 8-hour 8 PM
Colorado Springs
[expand +]		 CCOL Moderate 72 Particulate < 2.5 micrometers 20 µg/m3 24-hour 8 PM
Grand Junction
[expand +]		 PAL Moderate 67 Ozone 60 PPB 8-hour 8 PM
Pueblo
[expand +]		 CAN Unhealthy for Sensitive Groups 121 Particulate < 2.5 micrometers 43 µg/m3 24-hour 8 PM
Colorado River Valley
[expand +]		 RIFLO3 Moderate 61 Ozone 58 PPB 8-hour 8 PM
Four Corners
[expand +]		 PAG Good 32 Particulate < 2.5 micrometers 5 µg/m3 24-hour 8 PM
Steamboat Springs
[expand +]		 SSMB Good 46 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Aspen
[expand +]		 ASPN2 Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 8 PM
Other
[expand +]		 DELT Unhealthy for Sensitive Groups 114 Particulate < 2.5 micrometers 40 µg/m3 24-hour 8 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 90 Ozone 67 PPB 8-hour 3 PM
Ft. Collins - Greeley
[expand +]		 FOS Moderate 67 Ozone 60 PPB 8-hour 5 PM
Colorado Springs
[expand +]		 MAN Moderate 87 Ozone 66 PPB 8-hour 5 AM
Grand Junction
[expand +]		 PAL Moderate 71 Ozone 61 PPB 8-hour 6 PM
Pueblo
[expand +]		 CAN Unhealthy for Sensitive Groups 121 Particulate < 2.5 micrometers 43 µg/m3 24-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Moderate 64 Ozone 59 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Moderate 51 Ozone 55 PPB 8-hour 1 AM
Steamboat Springs
[expand +]		 SSMB Good 46 Particulate < 2.5 micrometers 8 µg/m3 24-hour 8 PM
Aspen
[expand +]		 ASPN2 Moderate 70 Particulate < 2.5 micrometers 19 µg/m3 24-hour 8 PM
Other
[expand +]		 DELT Unhealthy for Sensitive Groups 120 Particulate < 2.5 micrometers 43 µg/m3 24-hour 4 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 84 0.067 0.055 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