Record-high air pollution in Pakistan’s Punjab province prompted authorities to keep government employees at home and close additional schools, as doctors reported an increase in people seeking treatment for smog-related ailments.

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

Pakistan's second city of Lahore will close primary schools for a week over record pollution, government authorities said Sunday, to avoid exposing millions of children to smog several times above levels deemed dangerous.