Longterm health damage becomes a concern as the air quality index reached hazardous levels for some neighborhoods ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the ...

Emergency room doctors report waves of patients with breathing problems as smoke increases fine particulates in the air. Health officials also are monitoring the potential mental health toll wildfires ...

Tens of thousands of people have been impacted by evacuation orders since the blazes began. Follow for live updates.

At least 10 people are dead and thousands of structures have been damaged or destroyed as fierce wildfires rage in the Los Angeles area. Fast-moving flames are burning through homes ...

With hazardous levels of smoke lingering over Los Angeles County as a result of the slew of wildfires currently burning ...

Thousands of firefighters were battling at least three separate blazes on Wednesday, from the Pacific Coast inland to ...

Certain masks are effective in protecting against wildfire smoke — but only if they are fitted and worn properly.

Wildfire smoke increases tiny particles in the air known as particulate matter that can be harmful to people’s health.

AirNow is a collaborative effort of federal agencies that provides air quality data across the U.S. The site also has ...