A high pressure area has higher air pressure, which happens when cool air sinks. This usually brings clear skies and calm weather. On the other hand, a low pressure area has lower air pressure because warm air rises, leading to cloudy skies and stormy weather.Knowing why weather changes is important for safety. It helps people prepare for bad weather like typhoons and floods. It also helps with planning for the economy, managing resources, and protecting public health, allowing communities to adjust to different weather conditions..