Extreme heat spreads across Europe as WMO warns of expanding impacts on millions

Extreme heat continued to spread across Europe on June 24, 2026, prompting widespread red alerts and health warnings across Europe. The prolonged heatwave driven by a strong upper-level ridge is affecting much of Western, Central, and Southern Europe, with temperatures forecast to remain 3 to 10°C (5.4 to 18°F) above seasonal averages and locally exceed 40°C (104°F) through the end of June. Source