Nepal’s capital city Kathmandu has ranked 5th in Pollution Index 2017 mid-year as published by the Numbeo.com recently. African country Ghana’s capital city Accra tops the list as New Zeanland’s capital city Wellington ranks as the least polluted cities among 269 cities around the globe. Kathmandu slumps two spots down to 5th with 96.57 pollution index. Collected by SilentCSanj