Kathmandu air pollution hits record high

Winter inversion, vehicular emission, wildfires, and cross-border industrial pollution have combined to give Kathmandu Valley the worst air quality among cities in the world this week, adding to the risk of respiratory complications for Covid-19 patients.

On Monday night, the Air Quality Index (AQI) in parts of Kathmandu crossed 500, according to measurements at the US Embassy measuring station at Phora Darbar. It remained at above 500 from 10PM till 5AM, falling to 480 at 7AM on Tuesday.