6. Bakersfield, CA
A number of people who suffer from adult asthma in this city is abnormal (47,776), having in mind that total population is a little more than 880,000. The city is ranked 1st for 24-hour particle pollution out of 186 metropolitan areas and 2nd for annual particle pollution out of 184 metropolitan areas.
![25 Most Polluted Cities in the US in 2017](https://imonkey-blog.imgix.net/blog/wp-content/uploads/2017/11/03175642/dawn-1845604_1280-750x422.jpg?auto=fortmat&fit=clip&expires=1755302400&width=480&height=270)
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