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Detailed Air Quality Summary for 02/23/25 (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 +]		 LNGM Moderate 54 Particulate < 2.5 micrometers 11 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 62 Particulate < 2.5 micrometers 15 µg/m3 24-hour 5 AM
Colorado Springs
[expand +]		 MAN Good 48 Ozone 52 PPB 8-hour 5 AM
Grand Junction
[expand +]		 PAL Good 30 Ozone 32 PPB 8-hour 5 AM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 5 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 10 Ozone 11 PPB 8-hour 5 AM
Four Corners
[expand +]		 CTZ Good 20 Ozone 22 PPB 8-hour 5 AM
Other
[expand +]		 ASPN Good 43 Ozone 46 PPB 8-hour 5 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 56 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
[expand +]		 PMS Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 3 AM
Colorado Springs
[expand +]		 MAN Good 48 Ozone 52 PPB 8-hour 5 AM
Grand Junction
[expand +]		 PAL Good 33 Ozone 36 PPB 8-hour 1 AM
Pueblo
[expand +]		 PWES Good 34 Ozone 37 PPB 8-hour 5 AM
Colorado River Valley
[expand +]		 RIFLO3 Good 19 Ozone 20 PPB 8-hour 1 AM
Four Corners
[expand +]		 CTZ Good 27 Ozone 29 PPB 8-hour 1 AM
Other
[expand +]		 ASPN Good 44 Ozone 47 PPB 8-hour 2 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