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15 Cities with the Cleanest Air in the World

Published on November 24, 2017 at 5:23 am by Ida Konjicija in Lists

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11. Helsinki, Finland

PM 2.5 annual mean, ug/m3: 8.97

Helsinki has pretty clean air for such a big and densely populated city. Gas emissions are reduced to a minimum thanks to the development of public transport, promotion of cycling and reduced traffic levels.

15 Cities with the Cleanest Air in the World

Oleksiy Mark/Shutterstock.com

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