What does "CAVOK" stand for in aviation weather reports?

In aviation weather reports, "CAVOK" stands for "Ceiling And Visibility OK." This term is used to indicate that weather conditions are generally good for flying. Specifically, it means that visibility is ten kilometers or more, there are no significant weather phenomena affecting visibility, and there are no clouds below the minimum heights specified for low-level flights. This designation helps pilots quickly assess the flying conditions at a glance, ensuring safety and operational efficiency.

The term reflects the aviation community's need for concise communication regarding weather conditions that could influence flight safety. By clearly indicating that the ceiling and visibility do not present any issues, "CAVOK" facilitates better decision-making for pilots and air traffic controllers.