Air pollution climbs in Kathmandu Valley, warning for at-risk groups

Monitoring stations across the Kathmandu Valley recorded air quality index readings in the unhealthy range, with fine particulate levels peaking in the early morning and evening.

Health workers advised people with respiratory conditions, children and older adults to limit time outdoors.

What is driving it

Environmental researchers point to construction dust, vehicle emissions and wildfires in surrounding districts. Reduced winter airflow traps pollutants inside the bowl of the valley.

Local authorities said street cleaning and water spraying at construction sites have been stepped up.