Lahore and its 13 million residents have now been choking for a week; the air quality index has passed the 1,000 mark repeatedly this month - anything above 300 is considered hazardous.

In Lahore residents endure a prolonged smoggy siege, with the city ranked as the most polluted on the planet, grappling with air quality 70 times higher than WHO recommendations.

Swiss group IQAir, which draws data from 14 regional monitoring stations, rated Lahore the world's most polluted city on Wednesday, with an air quality index (AQI) score of 1165, more than 120 ...

Lahore remained the world's most polluted city Wednesday morning, with air-quality index hitting a record high of over 1,100. Anything over 300 is considered hazardous to health.