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.

Record-high air pollution in Pakistan's cultural capital of Lahore is sending more people to hospitals and private clinics, doctors said Wednesday as authorities warned a complete lockdown could be imminent if residents fail to don face masks and follow other guidance related to smog.

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.

Unprecedented air pollution in the Pakistani city of Lahore has forced authorities to close all primary schools for a week. From Monday, 50% of office workers will also work from home, as part of a "green lockdown" plan. Other measures include bans on engine-powered rickshaws and vendors that barbecue without filters.