What Causes Weather?

Weather is the physical condition of the atmosphere at a particular time. It includes temperature, air pressure and water content.
Weather is produced when air moves from place to place. This moving air is known as wind. Winds are caused by warm air rising and cooler air moving to replace it. Warm air is usually less dense than cool air; therefore, it creates low air pressure. Cool air is more dense and creates high air pressure.
Usually we have fine weather when the air pressure is high, and we will have clouds, rain or snow when air pressure drops.