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Kathmandu ranks fourth among world’s most polluted cities

KATHMANDU, Feb 20: Kathmandu has secured the position of the fourth most polluted city globally, based on its air po...
By Republica

KATHMANDU, Feb 20: Kathmandu has secured the position of the fourth most polluted city globally, based on its air pollution levels.


At present, the air quality in Kathmandu, Nepal’s capital, is deemed unhealthy, with PM2.5 levels soaring to 184 micrograms per cubic meter (μg/m3) as recorded at 9:45 AM, according to the data from IQ AirVisual, an organization specializing in global air-quality information.


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Kathmandu tops the list of polluted cities in the world


PM2.5, the primary airborne pollutant consisting of solid or liquid droplets with a diameter of less than 2.5 micrometers, poses significant health risks.


The current PM2.5 concentration in Kathmandu exceeds the World Health Organization’s (WHO) annual air quality guideline value by 24 times, as reported by IQAir.


Moreover, Bhaktapur faces a PM2.5 concentration 28.6 times higher than the WHO annual guideline value, registering at 196 μg/m3. In Lalitpur, the PM2.5 concentration stands at 12.5 times the WHO annual guideline, measuring at 155 μg/m3.


Kathmandu’s designation as the fourth most polluted city globally is based on IQ AirVisual rankings, with Chengdu in China holding the top spot, followed by Lahore and Delhi.


 

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