Lahore ranks world?s second most-polluted city, with 'hazardous' air quality
Lahore ranks world?s second most-polluted city, with 'hazardous' air qualityhttps://https://ift.tt/2IcYoml 
Delhi ranked as the most polluted city in the world with an air quality index (AQI) of 719
GEO TV - Pakistan
Delhi ranked as the most polluted city in the world with an air quality index (AQI) of 719 GEO TV - Pakistan
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