Lahore, the capital of Punjab, still tops the list of the world's most polluted cities.
The air in Lahore is very polluted, the number of particulate matter in the city has reached 516. 151 to 200 degrees of precursor meters are harmful to health, 201 to 300 degrees of pollution is more harmful to health, while air with more than 301 degrees of precursor meters is considered extremely harmful to health.
New Delhi, the capital of India, is the second most polluted city in the world, followed by Hanoi, Vietnam. Karachi, the most populous city in Pakistan, ranks sixth on the list with a record 174 cases of pertussis meters.
