Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder for people to get clean air.

American Lung Association report found that about 156 million people live in counties plagued by high levels of ozone and fine particulate matter

Detroit receives failing grades for number of unhealthy smog days per year, and its year-round levels of soot pollution.