This book examines the role of atmospheres in daily life, and defines their main characteristics. Outlining the typical phenomenological situations in which we experience atmospheres, it assesses their impact on contemporary aesthetics. It puts forward a philosophical approach which systematises a constellation of affects and climates, finds patterns in the emotional tones of different spaces (affordances) and assesses their impact on the felt body. It also critically discusses the spatial turn invoked by several of the social sciences, and argues that there is a need for a non-psychologistic rethinking of the philosophy of emotions.