10 Countries With the Worst Air Pollution

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9. Egypt

Annual Average PM2.5 Concentration (2023): 42.4 μg/m³

Egypt is ranked 9th on our list. As of 2023, the country has an annual average particulate matter concentration of 42.4 μg/m³. Its PM2.5 concentration is 8.5 times higher than the WHO standard.

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