France is experiencing its fifth heatwave of the summer, with particularly severe conditions in urban heat islands. These areas, characterized by dense construction and limited vegetation, trap heat and exacerbate rising temperatures. The Paris region is especially affected, with communities like Saint-Denis, La Courneuve, and Aubervilliers facing the brunt of the heat. Residents are reporting extremely high temperatures, even indoors, with some noting 27 degrees Celsius in their homes in the mornings. The lack of green spaces contributes to the intensity of the heat, making daily life increasingly difficult for those living in these areas. This highlights the vulnerability of urban populations to the effects of climate change and demand for solutions to mitigate the urban heat island effect.