Does air have to cool and sink to cause condensation?

Yes, air must cool for condensation to occur, as cooler air can hold less moisture than warm air. When warm, humid air rises, it expands and cools, leading to a decrease in temperature and pressure. As the air cools, its capacity to hold water vapor decreases, resulting in condensation as water vapor turns into liquid droplets. This process is commonly observed in cloud formation and dew.