Delhi is the most polluted capital city globally, says report

Delhi remained the most polluted capital city in the world but India, on the whole, had improved its average annual PM 2.5 (particulate matter) levels higher in 2020 than in 2019, according to a report from IQ Air, a Swiss air quality technology company, specialising in protection against airborne pollutants, and developing air quality monitoring and air cleaning […]

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