* Air resistance: When you move your hand quickly, you displace air molecules. This creates a force called air resistance, which pushes against your hand. The faster you move, the stronger the resistance. You can feel this force as a slight pressure or drag.
* Movement of air: The displaced air molecules create a slight breeze that can be felt on your skin. This is more noticeable if you move your hand in a sweeping motion or near your face.
So, while you don't have specialized receptors for "feeling" air like you do for touch, you can still experience its presence through the forces it creates.