Read MoreAt least six people have died from heat-related causes this year so far in sizzling metro Phoenix, where the temperatures this week hit 115 degrees Fahrenheit (46 Celsius), Arizona’s Maricopa Department of Public Health reported this weekAt least six people have died from heat-related causes this year so far in sizzling metro Phoenix, where the temperatures this week hit 115 degrees Fahrenheit (46 Celsius), Arizona’s Maricopa Department of Public Health reported this week