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LATEST NEWS UPDATES | Kolkata second most polluted metro city in India -Jayanta Basu

Kolkata second most polluted metro city in India -Jayanta Basu

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published Published on Mar 26, 2022   modified Modified on Mar 26, 2022

-The Telegraph

The report stated that the Indian subcontinent was the most polluted region of the world during 2021

Kolkata was the second most polluted metro city in India and 60th most polluted city in the world in 2021.

The city’s annual PM (particulate matter) 2.5 level, the most toxic ultrafine particulate, was nearly 12 times above the limit set by the World Health Organization, says a recently released international report on air pollution.

The 2021 World Air Quality Report is prepared by IQAir, a Swiss organisation working on air quality, based on PM 2.5 air quality data from 6,475 cities in 117 countries, regions and territories around the world.

The chart showcased in the report shows that Kolkata’s PM 2.5 level was 59 micrograms in 2021, a 26 per cent increase over 2020 PM 2.5 level of 46.6 micrograms, which was less than Delhi (96.4 micrograms) in gross value but much higher than the rest of Indian metros.

But Kolkata’s rise in average PM 2.5 level during 2021 was highest among all Indian metros with Delhi rising about 15 per cent, Mumbai by 8 per cent while Chennai and Bangalore almost remaining unchanged from 2020.

PM 2.5, ultrafine particulate that can enter deep in the lungs, is one of six routinely measured air pollutants and commonly accepted as the most harmful to human health. WHO has set an annual limit of 5 micrograms.

The report stated that the Indian subcontinent was the most polluted region of the world during 2021; with India occupying fifth most polluted country position with Bangladesh being global topper and Pakistan occupying third position.

India’s average PM 2.5 level increased to 58.1 micrograms in 2021 — ending a three-year trend of improving air quality. It was 72.5 micrograms in 2018 and declined to 58.1 micrograms in 2019, 51.9 micrograms in 2020, it stated.

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The telegraph, 26 March, 2022, https://www.telegraphindia.com/my-kolkata/news/kolkata-second-most-polluted-metro-city-in-india/cid/1857600


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