 But the Denton, Federalsburg, and Greensboro libraries will all serve as a cooling center today. Also, the Caroline County Senior Center and the Federalsburg Senior Center will also serve as cooling centers, but call ahead to confirm hours. And in Talbot County, at the Easton and St. Michael's libraries, they'll serve as cooling centers between 9 a.m. and 6 p.m. today. And the St. Michael's YMCA will also serve as a cooling center. They opened last hour at 5 p.m.