Top 20 Most Polluted Countries in the World

Nearly all countries in the world have dangerous levels of air pollution, and the most polluted countries in the world have levels over 15 times the WHO recommended limit. Smart Air analyzed 2021 air pollution data provided by IQAir for 6475 cities from 117 countries to determine the most polluted …

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Smart Air low cost purifiers

Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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