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flag South Dakota ranked fourth in the U.S. for cleanest air from 2022 to 2024, with low pollution due to sparse population and renewable energy use.

flag South Dakota ranked fourth in the U.S. for cleanest air from 2022 to 2024, with a fine particle pollution average of 5.7 µg/m³, below the national average of 8.8 µg/m³ and near the World Health Organization’s guideline of 5 µg/m³. flag The state’s low pollution is attributed to its sparse population, limited industry, and renewable energy use. flag Nearly half of Americans live in areas with unhealthy air, highlighting a national disparity. flag The state also recorded a five-year low in traffic deaths in 2025, reflecting broader public safety and environmental health trends.

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