The subject technology disclosed herein may allow a device to provide guidance based on sound measurements, which may include crowd-sourced measurements of the sound level at various locations other than a current location of the user. The crowd-sourced measurements may be real time measurements and / or may be stored and / or indexed by time (day,
time of day, week, month, etc.), type of activity at specific locations (happy hour, open-mic night, sports play-offs, etc.), or environmental context similar to other locations (touring band, protest, sporting event, etc.). The guidance based on the sound measurements may include a reminder notification to bring
hearing protection to a location for which crowd-sourced sound level measurements have been obtained, before the user arrives at the location. The guidance may also, or alternatively, include a recommended location and / or a recommended
route with a desired sound level, such as a quiet restaurant, or a quiet walking
route.