Macedonia Skopje among the top 10 most polluted cities in the world yet again By venco.d - October 25, 2020 0 272 As many as four major Balkan cities are on the world top list of 10 most polluted cities in the world. Belgrade comes at number two, Pristina is in sixth place, Skopje is in the eighth, and Sarajevo is number 9 on the list.