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 ...

The smoke and ash can blow under doors and around windows in nearby homes, bringing in chemicals that are absorbed into furniture, walls, and other indoor surfaces and continue off-gassing for ...