Quick Summary
Apple has restored blood oxygen tracking on some Apple Watch models in the United States through software updates. Data is handled and displayed through the Health app and requires recent software versions. Below is what changed, what SpO2 can and cannot tell you, and how to store it in Aether so it helps at your next visit.
What changed
Blood oxygen readings are returning for eligible devices after software updates. Presentation may differ from older versions, and you may need current iOS and watchOS releases. Availability can change by model and region.
How SpO2 helps and where it does not
- SpO2 is one signal about oxygen saturation. Treat it as a trend, not a single number.
- Wearable measurements can be affected by motion, skin temperature, fit, and circulation.
- Do not self diagnose based only on SpO2. Discuss patterns and changes with a clinician.
Make the data useful in Aether
- Update your iPhone and Apple Watch. Take several readings at rest and let the Health app record them.
- Export a weekly summary or capture a trend screenshot. Upload it to Aether.
- Add context that matters. Sleep quality, altitude, illness notes, and exercise on the same days.
- Share a read only link with your clinician. Revoke access when finished.
Helpful links
- Apple Newsroom
- Apple Support for Apple Watch
- Reuters technology coverage
- The Verge coverage
- Wired coverage
This article is informational and not medical advice.
Keep the context
Oxygen data is one part of your story. Aether keeps it together with symptoms, medications, and reports so visits focus on a plan, not on scattered files.