What conditions are favorable for the formation of Radiation Fog?

Radiation fog forms under specific atmospheric conditions that typically include a clear sky and little to no wind. During the night, the ground loses heat through radiation, causing the temperature of the air near the surface to drop. If the conditions are calm and the sky is clear, the cooling can continue until the air temperature reaches its dew point, leading to the formation of fog.

Clear skies facilitate the cooling process, while light winds are preferable as they help maintain a stable air layer near the surface. Strong winds or overcast conditions disrupt this cooling process by mixing the air and preventing it from reaching the necessary temperature for fog formation. Therefore, the combination of clear skies and minimal wind creates an ideal environment for radiation fog to develop. This understanding highlights why the selected answer reflects the essential conditions for the phenomenon.