Heatwave raises ozone to dangerous levels in central Switzerland

Summer weather causes high ozone levels in Central Switzerland Keystone-SDA

The sunny early summer weather has led to greatly increased ozone levels in central Switzerland. People are advised to avoid physical activity outdoors to prevent health problems.

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Current measurements show that the hourly average limit value of 120 micrograms per cubic metre is “widely” exceeded, especially in the afternoon, Umwelt Zentralschweiz (Central Switzerland Weather) reported on Thursday.

The organisation cited strong solar radiation as the reason for the high values. This converts man-made air pollutants into ozone. These substances come from traffic exhaust fumes, paints and solvents, among other things.

Too high a concentration of the irritant gas can lead to eye irritation, coughing or breathing difficulties. People with lung problems such as asthma in particular should only exercise in the morning and also air out their homes in the morning.

According to the cantonal environmental agency, spending time outdoors between midday and evening should be avoided if possible.

Adapted from German by AI/mga

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