Homes a few doors away burned down, she said. Now in her second week at a West Covina hotel, she’s able to think about the damage smoke and ash have caused inside her home and how her family ...

Along with the wildfires, residents must deal with other hazards: smoke and ash. Smoke is made of tiny particles. Smoke particles 2.5 micrometers or smaller in size—known as PM2.5—are ...

Wildfire smoke contains small particles that can cause serious health problems. Several parts of Southern California are currently under a windblown dust and ash advisory as deadly wildfires ...

What we’re really worried about is the PM2.5 levels,” or the fine particles in wildfire smoke, which have a diameter of less than 2.5 micrometers. In order for particles to enter your lungs’ air sacs, ...