The iconic skyline of downtown Los Angeles has been clouded by smog for decades, so this title should come as no surprise to Angelenos. Yet again, L.A. is the smoggiest city in the U.S., according ...

NYC’s not-too-shabby ranking on the 2025 “dirtiest” list comes as an upgrade to its former status as the “world’s second ...

LOS ANGELES (CNS) -- The Los Angeles-Long Beach area ranked as the nation's smoggiest region in a report released Wednesday ...