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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 02/28/26 (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 +]		 RFN Good 48 Ozone 52 PPB 8-hour 1 PM
Ft. Collins - Greeley
[expand +]		 MFP Good 45 Ozone 49 PPB 8-hour 1 PM
Colorado Springs
[expand +]		 MAN Good 46 Ozone 50 PPB 8-hour 1 PM
Grand Junction
[expand +]		 GJPB Good 27 Particulate < 2.5 micrometers 4 µg/m3 24-hour 1 PM
Pueblo
[expand +]		 PWES Good 43 Ozone 46 PPB 8-hour 1 PM
Colorado River Valley
[expand +]		 RIFL Good 16 Particulate < 2.5 micrometers 2 µg/m3 24-hour 1 PM
Four Corners
[expand +]		 CTZ Good 27 Ozone 29 PPB 8-hour 1 PM
Steamboat Springs
[expand +]		 SSMB Good 22 Particulate < 2.5 micrometers 4 µg/m3 24-hour 1 PM
Aspen
[expand +]		 ASPN Good 36 Ozone 39 PPB 8-hour 1 PM
Other
[expand +]		 TEL Good 44 Particulate < 10 micrometers 47 µg/m3 24-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 24 0.030 0.026 1 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 RFN Good 49 Ozone 53 PPB 8-hour 1 AM
Ft. Collins - Greeley
[expand +]		 FTCW Good 47 Ozone 51 PPB 8-hour 1 AM
Colorado Springs
[expand +]		 MAN Good 46 Ozone 50 PPB 8-hour 1 AM
Grand Junction
[expand +]		 PAL Good 32 Ozone 35 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 43 Ozone 46 PPB 8-hour 12 PM
Colorado River Valley
[expand +]		 RIFL Good 22 Particulate < 2.5 micrometers 3 µg/m3 24-hour 1 AM
Four Corners
[expand +]		 CTZ Good 27 Ozone 29 PPB 8-hour 1 PM
Steamboat Springs
[expand +]		 SSMB Good 24 Particulate < 2.5 micrometers 4 µg/m3 24-hour 3 AM
Aspen
[expand +]		 ASPN2 Good 39 Particulate < 10 micrometers 42 µg/m3 24-hour 3 AM
Other
[expand +]		 TEL Good 47 Particulate < 10 micrometers 51 µg/m3 24-hour 4 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
Denver DES Good 27 0.031 0.033 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