Cool air is a type of air that has a lower temperature compared to the surrounding environment. It often feels refreshing, especially on warm days. This cooler air can be created by natural processes, such as wind blowing from a body of water, or by artificial means, like air conditioning systems. Cool air is denser than warm air, which means it tends to sink and can create breezes. It plays a crucial role in weather patterns and can influence local climates. For example, sea breezes occur when cool air from the ocean moves inland, providing relief from heat.