January 23, 2009
Yellow to Orange PM2.5 AQI Levels
A homogeneous boundary layer was observed today, reaching up to 1.1 km. Code Orange concentrations were recorded in the Baltimore Metro area (between 15:00-1700 UTC), while Moderate AQI levels prevailed the rest of the day caused by the warming trend that began yesterday.
Posted by Ruben Delgado at January 23, 2009 11:24 PMComments
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