Cloud density refers to the amount of water vapor present in a cloud, typically measured in grams per cubic meter. It influences the cloud's appearance, thickness, and potential for precipitation. Higher cloud density often leads to more substantial clouds that can produce rain, snow, or other forms of precipitation. Factors affecting cloud density include temperature, humidity, and atmospheric pressure. As air rises, it cools, causing water vapor to condense into tiny droplets, increasing cloud density. Understanding cloud density is essential for meteorologists when predicting weather patterns and assessing storm development, particularly in relation to severe weather events like thunderstorms and hurricanes.