World-first global study shows almost nowhere on Earth now safe from air pollution

Over the two decades in question, the study revealed that the annual PM2.5 concentration and the number of high PM2.5 exposure days decreased in both Europe and North America.

However, exposures were seen to increase in southern Asia, Australia, the Caribbean, Latin America and New Zealand.

Globally, the annual average PM2.5 level between 2000 and 2019 was 32.8 µg/m3

In fact, despite a slight overall decrease in high PM2.5 exposed days globally, by 2019 more than 70 percent of days still had PM2.5 concentrations higher than 15 µg/m3.

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Article source: https://www.express.co.uk/news/science/1743801/air-pollution-global-study-almost-nowhere-earth-safe-who-levels-pm2-5