Wildfire smoke increases tiny particles in the air known as particulate matter that can be harmful to people’s health.
Smoke from wildfires — like the ones in Los Angeles — can have health consequences. Here's what experts expect.
Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.
People are taking precautions as multiple wildfires cause poor air quality across a wide swath of Los Angeles County.
As wildfires throughout Los Angeles remain uncontained, the resulting smoke poses a significant health risk to people in ...
Also, Santa Anita Park postponed Friday’s racing program until Jan. 16 because of poor air quality forecast in Arcadia, near ...
Southern California — with sprawling cities, clogged freeways and heavy industry — is already notorious for some of the worst ...