As winter sets in, Kathmandu is as usual doomed to breathe in toxic air

The bowl-shaped structure of the valleys, which are surrounded by high hills, traps the heavily polluted air brought by winds from north India.

As Lahore and Delhi’s air pollution worsens and has been ranked “severe”, according to the air quality index (AQI), the air quality in Nepal is predicted to worsen with the migrated wind currents.