2023 IQAir study ranks Mississippi as the most polluted US city, 1st among 7,800 global locations; US ranks 102nd in air quality, with Bangladesh worst globally.
2023 air quality study by IQAir ranks the most polluted US city as Mississippi, ranking 1st among over 7,800 global locations. The U.S. ranks 102nd out of 134 countries for air quality, with Bangladesh ranked worst globally. IQAir also ranked cities based on their annual average PM2.5 concentration, with Chicago ranking 2nd among major U.S. cities for 2023 air pollution, influenced by Canadian wildfire smoke.
March 22, 2024
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