https://www.mercurynews.com/2020/08/28/in-parts-of-the-bay-area-the-smoke-is-really-bad-again/

A cool breeze that brought relief from the heat and some relatively breathable air to most of the Bay Area region gave way Friday to something stronger, and the region once again filled with smoke as the thermometer reversed course.

It may be a while before it does so again