Apple Watch Logs 20 Minutes of Daylight as a Health Metric
Updated
Updated · OSXDaily · Jun 3
Apple Watch Logs 20 Minutes of Daylight as a Health Metric
3 articles · Updated · OSXDaily · Jun 3
Summary
Apple Watch models can automatically estimate and record time spent in daylight using a built-in light sensor, with the data viewable in the iPhone Health app under “Time in Daylight.”
Apple says the metric matters because about 20 minutes outdoors daily can support mood, sleep and vitamin D in adults, while 80-120 minutes for children may help lower myopia risk.
The reading depends on the watch being unobstructed, so long sleeves or other coverage can prevent the device from detecting outdoor exposure accurately.
Users can search “Daylight” in Health and pin the metric to the Summary screen, turning outdoor exposure into another trackable Apple health data point.