5 Cleanest Countries in Europe

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1. Estonia

Average Wastewater Treatment Level: 42.75

Average Mismanaged Solid Waste: 67.92

Annual Average PM2.5 Concentration (μg/m³): 4.9

Average Ranking: 6.3 

Estonia ranks at the top of our list of the 15 cleanest countries in Europe. It has an average rank of 6.3 and an air quality index of 4.9μg/m³. It is a northeastern European country with lots of islands and islets.  

You can also look at the 15 Friendliest Countries in Europe and the 20 Most Educated Countries in Africa.

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