U.S. Air Quality

Cloud Capped Boundary Layer

A cloud (dark red counts) capped boundary layer prevailed during today's observations. The colorbar has been reduced by a factor of 3, from the last lidar posting, to highlight today's boundary layer. Hourly PM 2.5 concentrations in the range of 6.3 to 7.6 ug/m3 [AQI Level: Good]were recorded at Maryland's Department of the Enviroment Oldtown site in Baltimore during ELF's operation.