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Air quality in Qacha's Nek

Air quality index (AQI⁺) and PM2.5 air pollution in Qacha's Nek • 14:34, Jul 28

Person holding a pleated HEPA filter and a honeycomb activated carbon filter side by side.
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Western US Air Quality Alert

Forest fire.
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Which is the most polluted city in Qacha's Nek?