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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 07/13/26 (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 +]		 EVG Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 6 PM
Ft. Collins - Greeley
[expand +]		 FOS Unhealthy for Sensitive Groups 136 Ozone 81 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 87 Ozone 66 PPB 8-hour 6 PM
Grand Junction
[expand +]		 PAL Moderate 61 Ozone 58 PPB 8-hour 6 PM
Pueblo
[expand +]		 PWES Moderate 77 Ozone 63 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Good 50 Ozone 54 PPB 8-hour 6 PM
Four Corners
[expand +]		 CTZ Good 50 Ozone 54 PPB 8-hour 6 PM
Steamboat Springs
[expand +]		 SSMB Good 37 Particulate < 2.5 micrometers 6 µg/m3 24-hour 6 PM
Aspen
[expand +]		 ASPN Good 46 Ozone 50 PPB 8-hour 6 PM
Other
[expand +]		 ALA Moderate 76 Particulate < 10 micrometers 106 µg/m3 24-hour 6 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 Unhealthy 151 Ozone 86 PPB 8-hour 5 PM
Ft. Collins - Greeley
[expand +]		 FOS Unhealthy for Sensitive Groups 136 Ozone 81 PPB 8-hour 6 PM
Colorado Springs
[expand +]		 MAN Moderate 87 Ozone 66 PPB 8-hour 5 PM
Grand Junction
[expand +]		 PAL Moderate 64 Ozone 59 PPB 8-hour 4 PM
Pueblo
[expand +]		 PWES Moderate 77 Ozone 63 PPB 8-hour 6 PM
Colorado River Valley
[expand +]		 RIFLO3 Moderate 51 Ozone 55 PPB 8-hour 5 PM
Four Corners
[expand +]		 CTZ Moderate 61 Ozone 58 PPB 8-hour 9 AM
Steamboat Springs
[expand +]		 SSMB Good 40 Particulate < 2.5 micrometers 7 µg/m3 24-hour 12 PM
Aspen
[expand +]		 ASPN Good 49 Ozone 53 PPB 8-hour 3 AM
Other
[expand +]		 ALA Moderate 76 Particulate < 10 micrometers 105 µg/m3 24-hour 1 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Moderate 67 0.059 0.057 12 PM

* 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