Stay indoors and limit outdoor activities. An N95 mask can be worn. A cloth mask will not protect against from smoke. A “clean air room” can be created to reduce smoke exposure while inside by using a portable air cleaner or a “DIY air cleaner” made with a box fan and a filter.

A second day of ferocious winds were forecast for Tuesday in Southern California where firefighters remained on alert and extreme fire weather raised the risk of new wildfires two weeks after two major blazes still burning in the Los Angeles area sparked.