Not Delhi but Pakistan's Lahore has become the world's most polluted city with an Air Quality Index of 1,900 on Sunday, which is its highest ever.

Lahore, Pakistan, experienced record-breaking air pollution on November 2, with an Air Quality Index (AQI) of 1,900, six times higher than the World Health Organization's limit. The Pakistani government attributed the surge to winds carrying pollution from India and seasonal crop residue burning.

Primary schools in Lahore will remain closed for a week because of the pollution, according to a government notification.

Lahore, Pakistan’s second-largest city, was ranked as the world’s most polluted city last week, with a record-high pollution reading of 1,900 near the Pakistan-India border. Now, Pakistan’s Punjab gov

Data from the provincial government and Swiss group IQAir showed that on Sunday, Lahore topped the real-time list of the world’s most polluted cities, following its highest recorded pollution levels near the Pakistan-India border on Saturday.

In light of the worsening pollution crisis, Lahore's administration has also taken a few emergency steps. Primary schools in several cities have been closed for a week, with parents advised to make their children wear masks.

WHO

Pakistan’s second largest city with beyond ‘dangerous’ air pollution shuts schools for a week - Lahore braces for worsening air quality while officials blame neighbouring India