- Who
- Luca Zocchi
- What
- 125.0 decibel(s) (A-weighted)
- Where
- Italy (Varese)
- When
The loudest whistle is 125.0 dB(A), was achieved by Marco Ferrera (USA) on 5 March 2004 and equalled by Luca Zocchi (Italy) on 7 July 2014.
The measurement was made on a Class 1 meter from 2.5 metres away.
