As shown in Adam's earlier post, good PM2.5 AQI levels were experienced throughout the eastern US. In Baltimore, the Oldtown ground monitoring station recorded PM2.5 concentrations that ranged between 5-12 ug/m3 (Good AQI levels: 16-39). A homogeneous boundary layer extended up to 1 km throughout today's timeseries. In order to show today's timeseries the color scale was reduced by a factor of 3.5, when compared with the lidar post of August 27th.