When you open two windows on opposite sides of a room there will be a draft going through the room. What dictates the direction of that draft?

Question

I often open my balcony door and my front door to let fresh air into my apartment. I’ve noticed that the draft almost always flows from the balcony and out the front door. Shouldn’t the direction be random?

In: Physics

Answer 1

Also dependant on temperature differences or other concentration gradients impacting the flow