Noise surrounds us more than we think. And, over time, it can take its toll. Bars, subways, construction, loud music, or even noisy offices can raise decibels to levels we don't perceive as dangerous until it's too late. The Apple Watch includes the Noise app for precisely this purpose: Monitor your surroundings with the built-in microphone, estimate the level in decibels, and warn you if exposure could affect your hearing..
The beauty of this feature is that it works alone, without recording what you say or storing sounds.The watch takes periodic measurements of the environment and, if the average over a few minutes exceeds the threshold you have set, sends you a notification with a tap on your wristThis prevents false alarms caused by occasional noises, but also protects you from prolonged exposure, which carries the greatest risk.
What exactly does the Noise app do on the Apple Watch?
The Noise app on Apple Watch measures ambient sound using the microphone. and calculates levels in A-weighted decibels (dBA), the most common standard for reflecting how the human ear perceives different frequencies. Measurements are taken periodically throughout the day while wearing the watch, and no audio clips are saved at any time.
The system alerts you when the average of the last three minutes reaches or exceeds a threshold. It's up to you. That notification comes on your Apple Watch and can also be mirrored on your iPhone, so you can check it at your leisure when it's convenient for you. The idea is to give yourself room to move away or use hearing protection. if the environment is not healthy.
In addition to measuring in the background, you can open the Noise app at any time. to check the live value. On the screen, you'll see the current level in dB and a color-coded indicator that tells you whether exposure is safe or not, depending on the time.
How to set up Noise for the first time
You can let the Apple Watch take measurements on autopilot. or adjust the alert threshold to your liking. The easiest way to do this is through the Watch app on your iPhone.
- Open the Watch app on your iPhone.
- Go to My Watch and tap Noise.
- Choose Noise Threshold and select the decibel level that will trigger notifications.
You can also set the threshold directly on the watch.On your Apple Watch, go to Settings > Noise and set the level at which you want the alert to be triggered. When the three-minute average exceeds it, the watch will alert you with a haptic notification.
If you prefer to control the measurement manuallyIt's as simple as disabling continuous ambient readings and only opening the Noise app when you want to check a specific situation. Below, you'll see how to disable ambient measurement completely.
Noise alerts: what is considered a problematic environment
The available thresholds range from moderate situations to very aggressive environments.: 80, 85, 90, 95 or 100 dB. The watch will only notify you if the sustained average for three minutes or more exceeds the value you have selected, avoiding alarms due to specific peaks such as a door slamming or a motorcycle passing quickly.
Below 80 dB is generally considered safe for prolonged exposure., and the app marks it as OK. From there, the risk increases with the duration of exposure, and the Apple Watch will present it as Noisy to help you take action.
A practical example: If you set the threshold to 85 dB, Apple Watch won't alert you about brief spikes in a bar with music playing. It will notify you if the level remains high for several minutes, telling you that you should move away or reduce exposure.
Where to see measurements and details on iPhone
All the information collected by the Apple Watch is organized in the Health app on the iPhone.The longer you keep environmental measurements active, the more history you will have to detect patterns or times of the year with more noise.
To check the details of a warning or review your levels:
- Open the Health app on your iPhone.
- Touch Summary at the bottom left and select the Noise notification you see at the top. Then, tap Show more data to expand the information.
In addition to ambient noise, in Health you have the Hearing category, which groups together the headphone audio levels and Noise notifications. From there you can see daily, weekly, monthly and yearly averages., and learn from fact sheets that explain what those values mean for your hearing health.
How to disable notifications and ambient measurement
There are several levels of control depending on whether you want to silence only alerts or pause all environmental tracking.
To stop receiving threshold notifications using the iPhone:
- Open the Watch app.
- Go to My Watch > Noise.
- Under Noise Threshold, choose Off.
To completely disable environmental measurements on iPhone:
In the Noise section of the Watch app, turn off Ambient Sound Measurements. From there, the watch will stop taking automatic samples and will only measure when you manually open the Noise app.
If you prefer to do it on the Apple Watch, go to Settings > Noise and adjust both the threshold and ambient measurements to your preference.
Using the app on a daily basis: direct access and immediate reading
Once you're set up, you can open the Noise app to instantly see the dB of your surroundings.It's very useful if you want to check out a room, workshop, class, or subway car in real time before staying there too long.
To always have this information at hand, add the Noise complication to your watch face. So, You can see at a glance if the environment is quiet or over-decibeled. without even opening the app.
Exposure Guidelines: How Long Is Safe at Different Levels
The relationship between decibels and exposure time is key to avoiding damageEven if two environments have the same noise level, the duration makes a difference. Here are the ranges you'll see reflected in the Noise app:
- 80 dB: Approximately 5 hours and 30 minutes per day can cause temporary hearing loss. Weekly limit: about 40 hours.
- 85 dB: Approximately 1 hour and 45 minutes per day is the limit for temporary loss. Weekly limit: 12 hours and 30 minutes.
- 90 dB: About 30 minutes a day can cause temporary loss. Weekly limit: 4 hours.
- 95 dB: Approximately 10 minutes per day. Weekly limit: 1 hour and 15 minutes.
- 100 dB: Just a few minutes a day to prevent damage. Weekly limit: 20 minutes.
The app shows you these limits clearly. and uses labels such as OK for levels below 80 dB, and Noisy for exposures that should be avoided or reduced. Properly protecting your hearing is essential to prevent long-term damage..
Feature compatibility and requirements
Noise notifications arrived with watchOS 6Apple's official documentation indicates that alerts are available on Apple Watch Series 4 and later models with that system or higher. 2019 watchOS 6 materials mention broad support for Apple Watches updated from Series 1 to Series 5., but in practice push notifications are associated with Series 4 and later.
If you want the best experience, make sure your Apple Watch and iPhone are updated to recent versions of watchOS and iOS, respectively. This way you benefit from improvements in precision and the latest options in Health and Hearing.
What can affect measurement accuracy
Water and wind can alter the microphone reading. and cause variations in the decibel level. If you are going swimming or doing water activities, Turn on Water Mode or Water Lock on your Apple Watch to avoid accidental touches and minimize erratic measurements.
When the watch is in Water Mode, noise measurements stop. They are also suspended if the microphone or speaker is in use by another app, such as a call or recording. Keep this in mind if you don't see data for a period of time.; it is usually for one of these reasons.
Remember that the app does not record audio or store conversations.It only captures the sound level, calculates averages, and discards the rest, with the goal of informing you about your noise exposure.
Real cases in which it is convenient to have it activated
Everyday environments can reach unexpectedly high noise levels.: subway lines with very noisy carriages, bars with loud background music, warehouses, shopping centres or workshops. Since we are not always aware at the moment, watch alerts help us react in time..
Many people get used to living with noise pollution. and thinks that nothing is happening because there are no immediate warning signs. However, Apple has shared figures that invite caution.One in four people are exposed to potentially dangerous noise levels every day. Having Apple Watch measure the environment makes prevention much easier.
AirPods Pro 2 Hearing Test and Health Log
If you use AirPods Pro 2, you can perform a hearing test from your iPhone.This feature, available with iOS 18.1 or later, is intended as a medical-focused feature and provides a clear report within the Health app.
- Put on your AirPods Pro 2 and check that they are connected..
- On your iPhone, go to Settings and access your AirPods tab..
- Choose Take a hearing test, tap Start and stand in a quiet place.
- Listen for the tones and tap the screen when you hear them., repeating the process in each ear.
At the end, you will see the results in the Health app., with instructions on whether everything is correct or if you should consider options such as hearing aids. This information is integrated with your history of exposure to environmental noise. for a more complete view of your hearing.
Protect yourself when you can't escape the noise
There are situations where you can't walk away: working in noisy environments, commuting on public transport every day, or living next to a busy road. In these cases, AirPods Pro 2 can help you. even when you want to continue hearing what's happening around you.
Activate Transparency mode and automatically reduce loud noises. So, if a siren sounds or a noisy motorcycle passes by, AirPods attenuate the spike, but you will still hear conversations and surrounding sounds naturally.
- Connect AirPods Pro 2 to your iPhone and go to Settings > your AirPods.
- Activate Reduce loud noises and select the desired reduction level.
- Use Transparency mode when you need to hear the ambient noise without sacrificing protection from dangerous peaks.
This approach is especially useful in workplaces with intermittent noise., such as a call center or an environment with background music, where unexpected peaks are the most annoying. Combined with Apple Watch alerts, you will have an extra layer of prevention.
Practical tips to get the most out of the Noise app
Start with a cautious threshold, for example 80 or 85 dB, and then assess whether you need to adjust it. The longer the exposure time, the more important an early warning is..
Check your history in the Health app at the end of the week. You'll be able to see if there are patterns such as certain routes, locations or time slots that are repeated with high levels.
Add the Noise complication to a watch face you wear every day. If you are not convinced to always see the data, place it in a secondary sphere and change it when you visit environments that tend to be noisy.
Keep in mind the interference factors like strong wind or water, and remember that whether you are using the microphone or speaker (call, voice notes), measurements are paused.
Take into account international recommendations that promote safe listening devices and systems, such as the WHO-ITU initiatives, and uses technology as an ally to comply with good practices of sound exposure.
The Apple Watch, the iPhone Health app, and AirPods Pro 2 make a very complete team. to understand, monitor, and reduce your noise exposure. By enabling environmental monitoring, setting a consistent threshold, reviewing historical data regularly, and relying on noise reduction when you can't get away, You will take care of your hearing without complicating your life.
