Mike Rapoport wrote:

It is kinetic energy of each molecule that moves the the air. The particles
are just bouncing off other particles in a radom fashion. The low pressure
area has fewer molecules to run into (and bounce back towards the higher
pressure) so the molecules generally move towards the low pressure. Thus
it is the high pressure driving the air.

But how did you get all those molecules out of the area in order to form
the low? Conversely, how did you get all of the molecules together to
form the high?

Matt