KR1: The number of deaths and people at risk of heat stress will increase two- to threefold at 3ºC compared with 1.5℃ GWL . Risk consequences will become severe more rapidly in Southern and Western Central Europe and urban areas . Thermal comfort hours during summer will decrease significantly , by as much as 74% in Southern Europe at 3ºC GWL. Above 3ºC GWL, there are limits to the adaptation potential of people and existing health systems, particularly in Southern Europe, Eastern Europe and areas where health systems are under pressure  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report