An air blowing apparatus is oriented toward a windshield glass of a vehicle and includes an air fan assembly located adjacent to the windshield glass and an air nozzle connected to the air fan assembly via a duct such that a fluid flows therebetween. The air nozzle is located so as to be opposite the windshield glass and is configured to adjust the pressure and angle at which air is discharged toward the windshield glass in accordance with the driving environment of a vehicle.