Five major fires spanning nearly 14,000 acres have engulfed California's most populous city, marking the most destructive wildfires the area has ever seen. The latest numbers show five people have been killed and nearly 180,

Southern California ‒ with sprawling cities, clogged freeways and heavy industry ‒ is already notorious for some of the worst air quality in the nation. This week's wildfires are putting millions of people at risk for immediate health problems and longer-term issues.