 Comico County, the Flanders room of the Civic Center, is a cooling station from 1 until 8 p.m. today at 500 Glen Avenue. The Mack Inc. Senior Center opened for residents ages 55 and over from 8 a.m. to 4.30 today off of Progress Circle. In Dorchester County, the Cambridge and Herlock Libraries are acting as cooling stations today, 11 to 7 in Cambridge.