194 Theoretical limit for a sound wave at 1 atmosphere environmental pressure; pressure waves with a greater intensity behave as shock waves.
180 Krakatoa volcano explosion at 1 mile in air [1]
160 M1 Garand being fired at 1 meter (3 ft)
150 Jet engine at 30 m (100 ft)
140 Low Caliber Rifle being fired at 1m (3 ft); the engine of a Formula One car at 1 meter (3 ft)
130 Threshold of pain; civil defense siren at 100 ft (30 m)
120 Train horn at 1 m (3 ft). Perforation of eardrums.
110 Football stadium during kickoff at 50 yard line at 5 m (16 ft) ; chainsaw at 1 m (3 ft)
100 Jackhammer at 2 m (7 ft); inside disco
90 Loud factory, heavy truck at 1 m (3 ft)
80 Vacuum cleaner at 1 m (3 ft), curbside of busy street, PLVI of City
70 Busy traffic at 5 m (16 ft)
60 Office or restaurant inside
50 Quiet restaurant inside
40 Residential area at night
30 Theatre, no talking
20 Whispering
10 Human breathing at 3 m (10 ft)
0 Threshold of human hearing (with healthy ears); sound of a mosquito flying 3 m (10 ft) away
