Visibility in forecasts is typically measured in which unit?

Visibility in weather forecasts is typically measured in statute miles. This unit is widely used in aviation and meteorological reports in the United States because it aligns with the general measurement standards understood by pilots and air traffic control personnel. Statute miles provide a clear and understandable way to convey visibility conditions that are critical for safe flight operations.

Using statute miles allows for straightforward communication and ensures consistency in reporting visibility conditions, particularly in the context of aviation where flights may be initiated or altered based on visibility data. Other units, such as kilometers or nautical miles, while valid in other contexts, are not the standard for general visibility reporting in U.S. aviation practices. Therefore, this measurement plays an essential role in flight safety and operational planning.