A method and a system for measuring the aerodynamic noise of a vehicle; the system is provided with: a measuring station, which is adapted to receive the vehicle and is provided with a supporting element; at least one blower carried by the supporting element and adapted to generate an air jet towards the vehicle; an actuating device for displacing the supporting element with respect to the vehicle; at least one phonometer for measuring the aerodynamic noise produced by the vehicle struck by the air jet generated by the blower; a position sensor for detecting the position of the supporting element with respect to the vehicle; and a processing unit connected to the phonometer and to the position sensor for correlating the aerodynamic noise measurements supplied by the phonometer with the position of the supporting element with respect to the vehicle.