Between May 15 and and August 2 a total of 2,025 people have suffered heat-related illnesses, of which 16 people have died, a ministry statement said.South Korea's heat record has been broken three times over the past week, with the latest all-time high set at 42.5C in the city of Yangsan on Sunday.The whole of Seoul was under the highest-level "severe heatwave warning" alert Tuesday, with temperatures forecast to soar again close to 40C."Extreme, life-threatening heat is forecast," the weather agency said in a statement Tuesday.