A cab for an agricultural working vehicle has a cab base and a cab roof, between which a windshield and side windows are situated in a frame structure, and a driver's seat situated on the cab base. There is at least one air treatment device for cooling and heating an inlet air flow which is supplied to the cab through an intake duct. The air treatment device has at least one first air distribution duct having at least one first air outlet opening, and at least one second air distribution duct having at least one second air outlet opening. The first air outlet opening outputs a first air flow substantially along the windshield and the second air outlet opening outputs a second air flow directed in the direction of the driver's seat. The first air flow has a higher temperature than the second air flow.