Southern California Faces Smoggiest Start to Year in Over a Decade
Southern California has experienced its smoggiest first five months of the year in over a decade, with 39 days of unhealthful air quality due to high ozone levels. The South Coast air basin, which includes Los Angeles, Orange, Riverside, and San Bernardino counties, has been particularly affected. The region's millions of gas-powered vehicles and the area's geography, which traps pollution, contribute to the smog problem. Despite efforts to reduce emissions over the past decades, the area still struggles to meet federal air quality standards for ozone. 
