The pressure created by a load of air on the surface of the Earth is known as air pressure. The pressure drops quickly as we ascend the atmospheric layers. The pressure of air is greatest at sea level and declines with altitude. The air temperature at a particular location influences the horizontal distribution of air pressure. Where the temperature is particularly high, the air heats up and rises. This results in the formation of a low-pressure zone. The air is cooler and heavy in areas with lower temperatures. Heavy air tends to sink, resulting in a high-pressure zone on the Earth’s surface.