In Europe, temperatures were 1.54°C (2.7°F) above the 1991-2020 long term average - triggering dangerously hot conditions for residents. Now, scientists reveal exactly how many people died due to the heat, which can trigger conditions such as heat exhaustion and heart failure. In the UK, there were 573 heat-related deaths in summer 2024, according to the experts at the Barcelona Institute for Global Health (ISGlobal).