Heatwave fuels ozone surge in South Korea; health risks rise

South Korea is facing a dual threat as a nationwide heatwave coincides with a sharp increase in ozone levels, prompting urgent health warnings. The "bad" air quality, marked by rising ozone (O₃) concentrations, poses a significant risk to public health.

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ozone is a major air pollutant.

Medical experts explain that while ozone in the stratosphere protects us from UV radiation, ground-level ozone is a major air pollutant. It forms when pollutants like nitrogen oxides and volatile organic compounds from vehicle exhaust and industrial facilities react with sunlight, a process accelerated during hot summer months. The higher the temperature, the faster ozone levels climb.

The respiratory system is particularly vulnerable to ozone. Experts warn that it can directly irritate mucous membranes, impair lung function, and worsen conditions like asthma and chronic bronchitis. Even short-term exposure to high ozone levels can require a considerable recovery period for the body.

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ozone can directly irritate mucous membranes, impair lung function, and worsen conditions like asthma and chronic bronchitis.

As the heatwave continues, authorities are urging citizens to take precautions. This includes limiting outdoor activities during peak ozone hours and staying hydrated. Those with respiratory issues are advised to be especially vigilant and follow medical guidance to protect their health from the combined effects of heat and poor air quality.

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Even short-term exposure to high ozone levels can require a considerable recovery period for the body.