What is standard atmospheric pressure? What is the relationship between air pressure and temperature?

For the relationship between gas temperature and pressure, PV=NRT is the only scientific basis, and others understand the problem (atmospheric pressure and pressure).

There is no limit to the volume of atmospheric pressure, so we can't directly infer the change of temperature from atmospheric pressure, but we can infer the change of atmospheric pressure from the temperature according to the characteristics of substances.

The atmospheric pressure decreases with the increase of temperature. Because the temperature is high and the air density is low, the pressure per unit volume of air is small. On the contrary, when the temperature is low, the air density is high and the atmospheric pressure is high.