The Bay Area has been suffering some of the worst air quality in the world in recent days. We'll get the latest on the air, how to protect yourself, and when the region might get some relief.
How Bad Is the Air, And When Might it Improve?
The morning sky near Twin Peaks in San Francisco, California on Sept 9. (Beth LaBerge/KQED)
John Balmes, professor of medicine and air quality expert, UCSF
Brian Garcia, warning coordination meteorologist, National Weather Service SF Bay Area/Monterey