Cloud classification is the process of categorizing clouds based on their appearance, altitude, and the atmospheric conditions in which they form. The main types of clouds are divided into three categories: cirrus, cumulus, and stratus. Each category has subtypes that describe specific characteristics, such as thickness, shape, and height. Clouds are typically classified into low, middle, and high altitude groups. Low clouds, like stratus and cumulus, form below 2,000 meters, while middle clouds, such as altostratus, are found between 2,000 and 7,000 meters. High clouds, including cirrostratus and cirrocumulus, form above 7,000 meters. Understanding cloud classification helps meteorologists predict weather patterns.