CHICAGO — When it comes to lung-damaging smog, Chicago and the rest of Cook County are the nation’s worst neighbors.
Newly released data from the U.S. Environmental Protection Agency show air pollution from the city and 120 of its suburbs contributes more to smog violations in other states than any other county.
Wisconsin suffers the brunt of Cook County’s dirty air during hot summer days, when smog is formed by a reaction between sunlight and pollution from car and truck exhaust, power plants and factories, fumes from volatile solvents and gasoline vapors.
