What does the code CLR indicate in a METAR report?

In a METAR report, the code CLR stands for "Clear," indicating that there are no significant clouds present in the sky. This suggests that visibility is typically very good, and pilots can expect an unobstructed view of the sky. In aviation weather reports, clarity is important for flight operations, as it can affect flight planning and safety.

While other codes denote varying conditions of cloud cover—such as "FEW" for few clouds, "SCT" for scattered clouds, and "OVC" for overcast—CLR specifically indicates an absence of these conditions. The use of CLR helps pilots and meteorologists quickly assess the weather and plan accordingly, particularly for visual flight rules (VFR) operations where clear skies are preferred.