What is the correct way to report wind as per aviation communications?

In aviation communications, wind is reported using a standard format that includes the wind direction in degrees and the wind speed in knots. The correct format consists of the wind direction first, followed by the wind speed, which is typically presented without the need to specify units when speaking to pilots and air traffic control.

The correct report of "270/10" indicates a wind coming from 270 degrees at a speed of 10 knots. This presentation is concise and adheres to international aviation standards, allowing for clear and efficient communication. Using both parameters together in this format is crucial for pilots to understand the wind's impact on their aircraft's performance and navigation.

Other formats such as reversing the order of direction and speed, or using different units like miles per hour, do not align with the established aviation reporting standards and could potentially lead to misunderstandings during critical flight operations. Therefore, the chosen option for reporting wind is the only one that effectively communicates the needed information in the accepted format.