Lately extreme weather event is occurring because of the global warming. Especially disaster due to the extreme heat are increasing but the definition and the standard of the extreme heat is obscure until now. So this study established the extreme heat standard by using the number of daily deaths. As a result, considering the climate of the megalopolis using daily maximum heat index and daily maximum temperature was the best for the standard of the extreme heat. And it showed that extreme heat lasted for 2 days affects the death toll the most. The regional incidence of the extreme heat is highest at August and July, September and June is following.

• 박종길(인제대학교 환경공학부/대기환경정보연구센터) | Jong-Kil Park
• 정우식(인제대학교 대기환경정보공학과/대기환경정보연구센터) | Woo-Sik Jung Corresponding Author
• 김은별(인제대학교 대기환경정보공학과/대기환경정보연구센터) | Eun-Byul Kim