File photo shows a layer of bad air hugs the skyline of downtown Fresno.
File photo shows a layer of bad air hugs the skyline of downtown Fresno. ERIC PAUL ZAMORA Fresno Bee Staff Photo
File photo shows a layer of bad air hugs the skyline of downtown Fresno. ERIC PAUL ZAMORA Fresno Bee Staff Photo

Valley cities continue to dominate dirty-air report card

April 18, 2017 9:01 PM