In this video, we explain the formation of air masses in a clear and exam-oriented manner. An air mass is a large body of air with uniform temperature and humidity, and it forms over specific regions known as source regions. The video covers: • What is an air mass? • Conditions required for the formation of air masses • Role of source regions (oceans, deserts, snow-covered areas) • Importance of high pressure, calm winds, and long residence time • Types of air masses (continental and maritime) •