Decibel Levels of Common SoundsBelow we compare dBA levels to common sounds, giving you context to portable generator labels. As you’ll see, the lower the dBA; the quieter the noise is.0 dBA — The hearing threshold10 dBA — Normal breathing20 dBA — Watch ticking30 dBA — Quiet bedroom at night60 dBA — Moderate rainfall70 dBA — Hair dryer75 dBA — Alarm clock80 dBA — Police whistle90 dBA — Lawn mower110 dBA — Chain saw120 dBA — Snowmobile130 dBA — Jack hammer150 dBA — Fireworks160 dBA — Shotgun180 dBA — Rocket launch