Top 10 Most Polluted Cities in the World - Page 3 of 9

Bamenda, Cameroon

This is not an Indian city but located in Cameroon. It is one of the smog cities in the world. What is the real reason behind the pollution in the city? One of the foremost reasons behind the pollution is extensive deforestation. Cutting of forest and trees is very common in the whole city. Therefore, the average PM2.5 level of the city is about 132. Due to this reason, it is included in one of the most polluted cities in the world.