Lahore [Pakistan], December 6 (ANI): Lahore and Karachi were ranked among the top three most polluted cities in the world due to their "very unhealthy" air quality, as Pakistan continues to battle a severe smog crisis, Geo News reported.
According to the Swiss air quality monitor, Lahore topped the global pollution chart with an Air Quality Index (AQI) of 266 at 9:14 am, while Karachi followed closely in third place with
