Thibaud’s pragmatic approach to urban ambiances transforms ambience from an impressionistic term into a research object for architectural and urban theory. Its iconic idea is that ambience emerges at the intersection of sensory experience, bodily activity and built environment; it is neither purely subjective mood nor purely objective property. The theoretical contribution is to define ambiances through a double aesthetic and pragmatic register, where the sensible city is grasped through action, perception and situated practice. Methodologically, Thibaud clarifies the field through exogenous, transverse and endogenous readings: he locates the scientific conditions of a sensory urban approach, relates ambience to neighbouring concepts, and explores its internal paradoxes. Its conceptual operation is embodied urban pragmatics: the city is analysed as a field of sensory affordances and experiential modulations. The bridge to the wider field joins phenomenology, pragmatism, urban studies, architecture, sound studies and environmental psychology.