What is the maximum visibility indicated in a METAR report?

In a METAR report, visibility is typically reported in statute miles, and the maximum visibility that can be indicated is 10 statute miles. This convention is consistent with aviation standards and practices, where visibility beyond 10 statute miles is usually reported simply as "greater than 10 miles." Therefore, 10 statute miles represents the upper limit for specific visibility reporting in METARs. Situations where visibility exceeds this figure will not provide a precise measurement beyond that point, for safety and clarity in meteorological reporting within aviation contexts. Understanding this standard is crucial for pilots and those involved in flight operations, as it affects decision-making regarding weather conditions and flight safety.