KATHMANDU, Jan 21: The quality of air in the Kathmandu Valley has deteriorated in the evening. The country’s capital city, on Thursday, recorded the highest PM 2.5 reading of 200.87 µg/m3 between 5 PM and 6 PM.
According to the data collected from various pollution monitoring stations installed at 17 different places in the Valley, the dust particles in the air are measured high (160.22μg/m³) in the morning between 9 and 10 and in the evening after 3 PM as people leave for their jobs and return home from the work.
Air quality of Kathmandu Valley improves slightly following Wed...
The lowest PM 2.5 reading was measured in the afternoon between 1 and 2 which is far higher than that of the WHO-set standard of 25 μg/m³ and Nepal government-set guidelines of 40 μg/m³.
Kathmandu, one of the most-polluted cities in the world, is the most densely populated city of the country. The Urban Health Initiative (UHI), an on-the-ground pilot program initiated by the WHO, has identified four major sources of air pollution - solid waste, transport, industry/brick kilns, and household energy sectors - in the Kathmandu Valley.
