23. Salt Lake City-Provo-Orem, UT
Salt Lake City is ranked 7th for 24-hour particle pollution out of 186 metropolitan areas, and it is in the 86th place for annual particle pollution out of 184 metropolitan areas. Besides, a number of people that have the problem with adult asthma are 154,727, while there are 653 persons with lung cancer.
![25 Most Polluted Cities in the US in 2017](https://imonkey-blog.imgix.net/blog/wp-content/uploads/2015/08/shutterstock_120668932-600x600.jpg?auto=fortmat&fit=clip&expires=1752624000&width=480&height=480)
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