Since they concentrate a growing majority of the world population, cities largely. contribute to climate change… as they suffer from it. The singular experience of living with climate change in cities is barely considered in urban environmental policies. They are usually in favour of expertise solutions. The survey Living in the urban furnaces investigates the sensitive experience of the inhabitants in five cities in the South of France. By using the term “climate subjectivation,” the authors seek to refer to the process describing how climate change, by affecting sensitive, ordinary life may induce reconsidered political and ecological relation to the inhabited milieu of life. Simultaneously, other ways of being ecologically committed emerge in this process.