Which season is the high air pressure, winter or summer?

The air pressure in winter is higher than that in summer.

According to the theory of molecular dynamics, the pressure of gas is caused by the frequent collision of a large number of molecules with the container wall. The impact time of a single molecule on the container wall is very short, and the effect is discontinuous, but a large number of molecules frequently collide with the container wall, and the force on the container wall is continuous and uniform. The ratio of this pressure to the wall area of the container is the pressure.