SpO₂ (oxygen saturation)
measurement in %
99 - 94
93 - 90
< 90
Altitude-Related Drop in Oxygen Saturation
Note: The following table provides information on how different altitudes affect the oxygen
saturation and how this affects the human organism. The following table does NOT apply
to persons with certain pre-existing conditions (e.g. asthma, heart failure, respiratory
disorders, etc.). Persons with pre-existing conditions may already experience symptoms
(e.g. hypoxia) in low altitudes.
Classification / required action
Normal range
Low range: medical consultation recommended
Critical range: medical consultation urgently
required
GB/IE/NI
31