A new agreement with the region’s air-quality watchdog commits the Long Beach and LA ports to developing and implementing ...

LOS ANGELES (KABC) -- The Los Angeles Unified School District on Friday is expected to unveil a school-based air quality monitoring network. The "Know Your Air ...

For decades, Los Angeles has topped the list as the smoggiest city in the U.S., but now, climate change is fueling a new kind of pollution from toxic urban wildfires to heat-driven ozone and smoke ...

Marathon runners consistently finished slower in cities with higher levels of dangerous particles in the air, researchers found.