10 U.S. Cities With the Most Dangerous Air to Breathe

Lancaster, Pennsylvania

Well-known for its Amish population, Lancaster experiences occasional spikes in short-term particle pollution (9 times per year on average), even if they rely on horse-and-buggy transportation. “Nearby coal-fired power plants are partly to blame for the region’s air quality problems, Lancaster Online reported.”


Fortunately, the city experienced 47 fewer high ozone days than it did in 1996. And annual levels of particle pollution are dropping, and this is encouraging.

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  • DONNA LAGOMARSINO March 7, 2018 at 12:08 am

    Well when Dump gets done with America/Such as No More EPA.. We will have pollution all around in America and more illness & dearth…Wake up Citzens and get Mently Unstable Dump out of the White House and make America great again!!!!!!

  • bob March 9, 2018 at 8:49 pm

    I been wanting to visit Colorodo and Reno .now that I am retired. I do have Copd,,and Uri .I live in upstate New York … We have are probelems wiht carbon ,fumes from cars.