At what oxygen level does dizziness typically occur?

Dizziness typically occurs at oxygen levels around 16%. At this concentration, there is a significant decrease in available oxygen for the body, which can lead to hypoxia. The brain is particularly sensitive to changes in oxygen availability, and a level of 16% can result in cognitive impairments and physical symptoms such as dizziness.

In environments with oxygen levels below this threshold, individuals may experience increasing degrees of impairment, as the body struggles to function optimally without sufficient oxygen. It’s essential for safety in various settings, especially in confined spaces or high-altitude environments, to monitor oxygen levels closely to prevent such symptoms and ensure proper ventilation or supplemental oxygen is provided as needed.