A new analysis from the EU’s Copernicus Atmosphere Monitoring Service estimates that 34% of the world’s population was exposed to 'extremely poor' ozone air quality between January 1 and September 15, 2026.
Record-breaking heatwaves and wildfires in Europe, North America and elsewhere contributed to elevated ozone levels, while emissions from transport, industry and agriculture continue to fuel pollution.
The impact is especially pronounced in Asia, where 53% of the population experienced extremely poor ozone air quality.
The findings highlight the growing connection between climate change, wildfires and air quality, as well as the challenge of protecting public health as temperatures rise.
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