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No country met WHO air quality standards in 2021: Data

Only 3.4 percent of the surveyed cities met the standard in 2021, according to data complied by IQAir, a Swiss pollution technology company that monitors air quality. As many as 93 cities saw PM2.5 levels at 10 times the recommended level. No country met WHO air quality standards in 2021: Data
A woman crosses railway tracks as a goods train passes by, on a smoggy day in New Delhi, India, November 12, 2021. Reuters
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Reuters
Published at : March 22, 2022
Updated at : March 22, 2022 13:13
Shanghai

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