The high levels of Sizewell C traffic would result in increased journey times, a higher accident rate and poorer air quality, the report said.

BBC: Suffolk County Council report calls for villages bypass

The report found that 22 of the 25 most ozone-polluted cities improved their air quality in the past year.

FORBES: How Clean is the Air? Your iPhone Now Has the Answer

The report's findings mean that the District Council will have to designate a formal Air Quality Management Area.

BBC: NEWS | UK | England | Devon | Town's air quality causes concern

Its report grades cities using, in part, the EPA's color-coded Air Quality Index, as well as its own weighting system that ranks the severity of pollution on a daily basis.

FORBES: Life