Why does the descending air not allow for the clouds to form?

Descending air inhibits cloud formation because it is generally warmer and drier than the surrounding atmosphere. As air descends, it compresses and heats up, reducing humidity and preventing moisture from condensing into cloud droplets. This process creates stable atmospheric conditions, which suppresses the upward movement of air that is necessary for cloud development. Consequently, the lack of rising air means there are fewer opportunities for condensation, leading to clear skies.