Add Yahoo as a preferred source to see more of our stories on Google. Los Angeles has struggled with air pollution problems since before smog became a term. In 1943, smog covered the city so thickly ...

The Los Angeles-Long Beach area retained its dubious distinction as the nation's smoggiest region, with ozone pollution getting worse over the past year, according to an annual report by the American ...

The Los Angeles-Long Beach ranked as the nation's smoggiest region in a report released on Wednesday by the American Lung Association, which also faulted the region for short-term and year-round ...

Southern California air quality regulators are reneging on their promise to enact long-delayed rules to curb health-damaging and planet-warming pollution from the ports of L.A. and Long Beach by the ...

This is read by an automated voice. Please report any issues or inconsistencies here. According to the 2026 State of the Air report, Los Angeles remains the most ozone-polluted metro area nationally ...

Los Angeles has struggled with air pollution problems since before smog became a term. In 1943, smog covered the city so thickly that residents thought they were under a chemical attack. The creation ...