Anthony Souffle, Chicago Tribune
August 20, 2013
Georgia Kastaris of Old Town jumps in Lake Michigan for a swim in the early morning hours of Tuesday near the North Avenue Beach in Chicago. Those wishing to exercise should do so early or late in the day today after the Illinois Partners for Clean Air and Illinois Environmental Protection Agency issued an Air Pollution Action Day Alert to individuals businesses in the Chicago Metropolitan area. The air pollution levels are expected to reach the "Orange" or "Unhealthy for Sensitive Groups" category on t national Air Quality Index, the first Action Day issued for 2013.