Relative Humidity

Relative humidity is the amount of moisture present in the air expressed as a percentage of the maximum amount of water vapor the air can hold at that temperature. In camping and hiking contexts, it directly affects comfort levels, clothing performance, and gear function - high humidity makes hot weather feel more oppressive and reduces the effectiveness of sweat evaporation for cooling. Understanding relative humidity helps outdoor enthusiasts choose appropriate clothing layers, predict condensation issues in tents, and assess fire danger levels in dry conditions.