Maine experiences increasing extreme heat vulnerability, with Portland summers 2.4° warmer than in 1970 and 2 additional weeks of hot weather.

Maine faces increased vulnerability to extreme heat, with Portland summers 2.4° warmer than in 1970 and 2 additional weeks of hot weather. The state, accustomed to cold, is unprepared. The Heat and Health Index from the U.S. Centers for Disease Control and Prevention reveals the 10 most vulnerable communities, including Madawaska. Last week's heat wave serves as a preview of future summers.