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Air quality in Sahel

Air quality index (AQI⁺) and PM2.5 air pollution in Sahel • 05:58, May 11

Forest wildfire sending thick smoke into the sky
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Students participating in an EarthMuseum Learn classroom activity.
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Polluted skies over Hanoi.
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May 10, 2026: Hanoi among top 10 most polluted cities in the world

Which is the most polluted city in Sahel?