What does Apple Weather Airflow mean?

Apple weather airflow is airflow, which is the up and down movement of air. The air moving upward is called updraft, and the air moving downward is called downdraft. Especially the vertical movement of air. Movement of air (wind). Its speed is expressed in meters per second (m/s). The reason for air flow is the temperature difference caused by uneven heating. Hot air rises lightly and is supplemented by cold air flow, forming convection.