pollution

All primary schools in Delhi will close due to worsening air pollution, officials have announced.

Delhi and nearby cities are experiencing pollution levels that are deemed hazardous to people's health.

Authorities in Delhi - which has an estimated population of more than 33 million - have already enacted measures aimed at tackling the pollution, including spraying roads with water containing dust suppressants.

Earlier in the month, air pollution in the Pakistani city of Lahore forced officials to temporarily close its primary schools.

At the same time, monitoring by IQAir suggests the neighbouring cities of Gurugram and Noida had hazardous air pollution, as did the northern Indian city of Chandigarh.