N NumbLeg New member 22 Mar 2022 #1 Delhi most polluted capital in world: Report The report, presenting an overview of the state of global air quality in 2021, is based on PM2.5 air quality data from 6,475 cities in 117 countries.
Delhi most polluted capital in world: Report The report, presenting an overview of the state of global air quality in 2021, is based on PM2.5 air quality data from 6,475 cities in 117 countries.
