A hopper for dehumidifying loose particulate material, of the type constituted by a container for the particulate material, which is provided, in an upper region, with a covering provided with a manifold for loading the hopper; an air dehumidification device being functionally connected to the hopper; an area for venting the air that is present in the container being provided on the covering and being functionally associable with the intake of the air dehumidification device. The hopper further comprises air filtering elements which are arranged substantially at the venting area.