Columbus air quality index (AQI)
Last updated at 08:00, September 8 Local time
US AQI⁺
PM2.5 | 5.2 µg/m³
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Cities with high air pollution (AQI⁺)

News
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Riyadh currently faces poor air quality, AQI over 150, making it one of the world’s most polluted cities. Learn what’s driving the haze and what you can do to stay safe.
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September 6, 2025: Lima among the most polluted cities in the world
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