A severe heatwave hit Europe on Wednesday, June 24, 2026, pushing temperatures in major cities like Paris and Madrid over 100°F [4].

This extreme weather event threatens public health and infrastructure across the continent, with millions of people facing dangerous heat levels that exceed historical norms.

Temperatures across Europe averaged 5.5°F above the 1961-1990 normal [1]. An estimated 94 million people are expected to experience temperatures above 35°C [3]. The heat is driven by an atmospheric “omega block” pattern, which meteorologists said is linked to the increased frequency and intensity of heatwaves caused by climate change [10].

In France, the heat has already proven fatal. Reports on the death toll vary, with some sources saying at least 18 people died, including two children and three elderly people [6], while other reports indicate more than 40 deaths [5].

The heatwave extends beyond France and Spain. The United Kingdom is bracing for temperatures that could reach 40°C (104°F) in some areas [7]. Other affected regions include Ireland, Italy, the Netherlands, Germany, Austria, and Switzerland [2].

While the average high forecast for Europe on June 24 was 73.6°F [2], the localized extremes in southern and central Europe have triggered red alerts in countries like Italy [2]. Local authorities said they continue to monitor the impact of the atmospheric block as the heat persists across the region.

“Temperatures in Paris and Madrid top 100°F”

The occurrence of an 'omega block' creates a stagnant weather pattern that traps hot air over a region for extended periods. When combined with the baseline warming of the planet, these blocks lead to more frequent and intense heatwaves, increasing the mortality rate among vulnerable populations and straining energy grids across the European continent.