Colorado
Translate
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 01/16/25 (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 +]		 I25GLO Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 7 AM
Ft. Collins - Greeley
[expand +]		 GREH Good 46 Particulate < 2.5 micrometers 8 µg/m3 24-hour 7 AM
Colorado Springs
[expand +]		 MAN Good 35 Ozone 38 PPB 8-hour 7 AM
Grand Junction
[expand +]		 GJPB Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 7 AM
Pueblo
[expand +]		 PWES Good 28 Ozone 30 PPB 8-hour 7 AM
Colorado River Valley
[expand +]		 RIFL Good 28 Particulate < 2.5 micrometers 5 µg/m3 24-hour 7 AM
Four Corners
[expand +]		 CTZ Good 13 Ozone 14 PPB 8-hour 7 AM
Other
[expand +]		 ALA Good 30 Particulate < 10 micrometers 32 µg/m3 24-hour 7 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver METRO
[expand +]		 I25GLO Moderate 53 Particulate < 2.5 micrometers 10 µg/m3 24-hour 7 AM
Ft. Collins - Greeley
[expand +]		 GREH Good 46 Particulate < 2.5 micrometers 8 µg/m3 24-hour 7 AM
Colorado Springs
[expand +]		 MAN Good 36 Ozone 39 PPB 8-hour 5 AM
Grand Junction
[expand +]		 PAL Good 31 Ozone 34 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 29 Ozone 31 PPB 8-hour 4 AM
Colorado River Valley
[expand +]		 RIFL Good 29 Particulate < 2.5 micrometers 5 µg/m3 24-hour 6 AM
Four Corners
[expand +]		 CTZ Good 17 Ozone 18 PPB 8-hour 1 AM
Other
[expand +]		 ALA Good 30 Particulate < 10 micrometers 32 µg/m3 24-hour 7 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
 Beta Extinction
(1/km)
 Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

* 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