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Detailed Air Quality Summary for 02/18/25 (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
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CHAT Moderate 67 Particulate < 2.5 micrometers 18 µg/m3 24-hour 12 PM
Ft. Collins - Greeley
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FTCF Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 12 PM
Colorado Springs
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CAN Good 45 Particulate < 2.5 micrometers 8 µg/m3 24-hour 12 PM
Grand Junction
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PAL Good 30 Ozone 32 PPB 8-hour 12 PM
Pueblo
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PFS Good 42 Particulate < 2.5 micrometers 8 µg/m3 24-hour 12 PM
Colorado River Valley
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RIFL Good 27 Particulate < 2.5 micrometers 5 µg/m3 24-hour 12 PM
Four Corners
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CTZ Good 40 Ozone 43 PPB 8-hour 12 PM
Other
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LMB Good 34 Particulate < 2.5 micrometers 6 µg/m3 24-hour 12 PM

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
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CHAT Moderate 71 Particulate < 2.5 micrometers 20 µg/m3 24-hour 1 AM
Ft. Collins - Greeley
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FTCF Moderate 63 Particulate < 2.5 micrometers 15 µg/m3 24-hour 11 AM
Colorado Springs
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CAN Good 45 Particulate < 2.5 micrometers 8 µg/m3 24-hour 12 PM
Grand Junction
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GJPB Good 38 Particulate < 2.5 micrometers 7 µg/m3 24-hour 1 AM
Pueblo
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PFS Good 42 Particulate < 2.5 micrometers 8 µg/m3 24-hour 12 PM
Colorado River Valley
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RIFL Good 27 Particulate < 2.5 micrometers 5 µg/m3 24-hour 9 AM
Four Corners
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CTZ Good 40 Ozone 43 PPB 8-hour 12 PM
Other
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LMB Good 38 Particulate < 2.5 micrometers 7 µg/m3 24-hour 6 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