Bad air quality from Woolsey Fire forecast for days ahead

PORTER RANCH, CALIFORNIA - NOVEMBER 09: The Woolsey Fire is seen looking towards the west valley area on November 9, 2018 in Porter Ranch, California. About 75,000 homes have been evacuated in Los Angeles and Ventura counties due to two fires in the region. (Photo by Kevork Djansezian/Getty Images)
PORTER RANCH, CALIFORNIA - NOVEMBER 09: The Woolsey Fire is seen looking towards the west valley area on November 9, 2018 in Porter Ranch, California. About 75,000 homes have been evacuated in Los Angeles and Ventura counties due to two fires in the region. (Photo by Kevork Djansezian/Getty Images)
Kevork Djansezian/Getty Images

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With fire comes bad air, and air quality experts say evacuees returning to their home could be breathing in toxins, even if the sky looks clear.