Top 10 Least Polluted Cities  in the World

Switzerland Zurich boasts some of the cleanest air in the world, with a PM 2.5 reading of 0.51 g/m3 for the entire year! 

Zurich,  Switzerland  (0.51 µg/m3)

For the past two decades, To cut pollution, the City of Hobart has included sustainability and climate factors into its decision-making processes and operations.

Hobart,  Australia  (2.73 µg/m3)

Iceland’s capital and largest city, Reykjavik, is located on the country’s coast.

Reykjavik,  Iceland  (3.68 µg/m3)

Launceston is a riverside town in Tasmania’s northwestern region. 

Launceston,  Australia  (3.68 µg/m3)

Honolulu is the capital of Hawaii and the entrance to the United States' island chain, located on the south side of the island of Oahu.

Honolulu,  US  (4.04 µg/m3)

Vitória is the capital of the state of Esprito Santo in Brazil’s southeast. Sand beaches such as Camburi and Curva da Jurema are popular.

Vitoria,  Brazil  (4.10 µg/m3)

Bergen is a Norwegian city on the country’s southwestern coast. Mountains and fjords surround it, notably the country’s longest and deepest, Sognefjord.

Bergen,  Norway  (4.39 µg/m3)

Wollongong is a coastal city in Australia, located on the Grand Pacific Drive south of Sydney.

Wollongong,  Australia  (4.48 µg/m3)

The Aura River runs through Turku, a city on Finland's southwest coast.

Turku,  Finland  (4.51 µg/m3)

Funchal is the capital city of Portugal’s Madeira archipelago. It’s backed by hills, and known for its harbor, gardens, and Madeira wine cellars.

Funchal,  Portugal  (4.51 µg/m3)