Highest note whistled
Who
Dillon McBride
What
7040 hertz(es)
Where
United States (Columbus)
When

The highest note whistled is 7040 Hz (A8 standard notation), and was achieved by Dillon McBride (USA) in Columbus, Ohio, USA, on 22 February 2018.

Dillon didn't learn how to whistle until the 8th grade.