Pakistani officials say dangerously poor air quality has forced the provincial government in Lahore to close primary schools for a week.

The smog crisis in Lahore, similar to the situation in India's capital Delhi, tends to worsen during cooler months due to temperature inversion trapping pollution closer to the ground. Make sense of the latest ESG trends affecting companies and governments with the Reuters Sustainable Switch newsletter. Sign up here.

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