Moving air transfers heat better than still air at the same outside temperature. This is due to the process of convection, which involves the movement of a fluid (in this case, air) to transfer heat. When air is still, heat transfer primarily occurs through conduction, which is the process of heat transfer through direct contact between objects or molecules. Conduction is generally less efficient than convection.
When air is in motion, such as through wind or forced air from a fan, the heat transfer process is enhanced. Moving air carries heat away from the source more effectively because it continually replenishes the layer of air in contact with the heat source, preventing the formation of a stagnant boundary layer. This constant flow of fresh air allows for faster and more efficient heat transfer.
In summary, moving air promotes convection and facilitates more efficient heat transfer compared to still air, even at the same outside temperature.