Climatologist François Gemenne said Paris is the city in Europe where the most people die during heatwaves [1].
This assessment highlights a critical gap in urban adaptation and public health infrastructure as extreme temperatures become more frequent across the continent. The warning suggests that the French capital is uniquely vulnerable to heat-related mortality compared to its European peers.
Gemenne, a co-author of the sixth IPCC report, said these findings during appearances on RMC and the program “Bienvenue en Île-de-France” [1, 2]. He noted that the current trend of extreme temperatures is not a one-time occurrence. He said, “Pas un épisode exceptionnel : c’est la nouvelle norme des chaleurs record” [2].
The climatologist said France is not sufficiently prepared for this shift in climate patterns [2]. This lack of readiness contributes to the high number of deaths recorded in the city during periods of intense heat. The combination of urban density, and inadequate cooling strategies creates a lethal environment for vulnerable populations.
Gemenne's warnings come as cities worldwide struggle to implement "cool city" initiatives to combat the urban heat island effect. In Paris, the concentration of concrete and lack of green space often trap heat, which elevates the risk of death during prolonged spikes in temperature [1].
Because these heatwaves are now considered the new standard, Gemenne said the urgency for systemic changes in urban planning and emergency response is paramount [2].
“Paris est la ville d’Europe où l’on meurt le plus de la canicule.”
The identification of Paris as a European leader in heat-related mortality underscores the danger of the 'urban heat island' effect in densely populated capitals. It indicates that existing public health protocols in France may be insufficient for a climate where record-breaking temperatures are no longer anomalies but baseline expectations.



