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By Anushka Sharma Mar 15, 2023 1:23:07 AM IST (Published)
The report named 'World Air Quality Report' 2022, presented PM2.5 air quality data of 7,300 cities across 131 countries. It ranked world's top 10 most polluted countries on the basis of the average recorded annual PM2.5 concentration in micrograms per cubic metre (μg/m3).
India has been ranked at 8th spot in the most polluted countries around the world, according to a report released by Swiss firm IQAir on Tuesday. However, India improved its ranking as it dropped from 5th to 8th place, the report said.
The report named 'World Air Quality Report' 2022, presented PM2.5 air quality data of 7,300 cities across 131 countries. It ranked world's top 10 most polluted countries on the basis of the average recorded annual PM2.5 concentration in micrograms per cubic metre (μg/m3).
According to the report, 39 of 50 most polluted cities in the world are in India. Delhi ranked 4th in the top 50 most polluted cities in the world. Its PM2.5 level is almost 20 times the safe limit, the report stated. Meanwhile, NCR regions including Noida, Ghaziabad, Gurugram and Faridabad have seen a decline in pollution levels.