FAA Weather Observation Practice Exam - Prep, Practice Test & Study Guide

Visibility within the range of 3 to 15 miles is reported to the nearest mile. This standard allows for a clear and concise representation of visibility conditions. Using whole miles simplifies communication between pilots and air traffic control, as it ensures that the reported visibility is easy to understand and interpret, especially during critical decision-making times in aviation. Reporting visibility in whole miles within this range avoids unnecessary complexity that might arise from reporting to the nearest tenth or using kilometers, ensuring that the essential information is conveyed efficiently and effectively.