This summer, Japan was hit by a record breaking extreme high temperature, and Japan Meteorological Agency recognized "extreme high temperature as a disaster." Two kinds of warming, global warming and urban heat island, and the seriousness of urban residents' health damage (heatstroke etc.) and energy problems (cooling demand etc.) caused by increase of abnormal weather are concerned. In this session, we will present the research results on the world's most advanced- future prediction of extreme high temperature, targeting large cities in Japan, the United States, Europe and Southeast Asia.