What is the consequence of the fires in northern California?

The National Guard is being mobilized to help fight fires in California. Yesterday Governor Arnold Schwarzenegger announced he is ordering 200 guardsmen to help fight hundreds of fires burning across the state. They are expected to join around 19,000 firefighters sometime next week. Air quality is also a major problem right now in northern California. People are being told to stay inside as much as possible. And schools in some communities have cancelled outdoor activities. New evacuations have been ordered near Big Sur. That fire has already burnt 47,000 acres of forest and several homes.