High pressure refers to a condition where the atmospheric pressure is significantly higher than the surrounding areas. This phenomenon often occurs in weather systems, leading to clear skies and calm conditions. High-pressure systems can influence local climates and are typically associated with fair weather. In meteorology, high-pressure systems are represented on weather maps as large areas of high atmospheric pressure, often denoted by the letter "H." These systems can affect air movement, causing winds to flow outward from the center. Understanding high pressure is essential for predicting weather patterns and changes in climate.