25 European cities improve air quality, 135 meet WHO annual fine particulate matter standard.

25 European cities have improved air quality, with 135 meeting the WHO annual fine particulate matter standard of 5 µg/m³. Despite air pollution being the biggest environmental health risk in Europe, causing 253,000 premature deaths in 2021, it has the cleanest air quality globally. This improvement is due to a significant decline in air pollution over the past two decades.

June 16, 2024
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