Top 10 Dirtiest Cities in the World in 2018

10. Brazzaville, Congo

Our Index Score: 39.1
This is among the dirtiest cities, with high traffic, mud, cheerily-painted shacks, and dirty hotels. If you want to visit this country, you will fly through France and Johannesburg from the US. And as you get into the country, you may think you are getting into a jungle due to the highest number of gorillas globally.
Air pollution is common in this city, and there is lack of clean water because of the consistent contamination of its water. Raw sewage is the main contaminant of the water, thus contributing to various health and sanitation issues for the capital. These affect the local population’s life expectancy; currently stands at 62.87 years.