https://www.mercurynews.com/2020/09/26/bay-area-heat-scorching-temps-red-flag-warning-extended-another-spare-the-air-alert/

High winds, triple-digit temperatures and an elevated fire risk will greet Bay Area residents by the end of the weekend and into the start of the week, with Monday expected to see the peak of a current heat wave before some modest relief arrives primarily to coastal areas, according to weather forecasters.

Correspondingly, air-quality officials have issued another Spare the Air alert for Sunday — saying the air is unsafe for people with respiratory sensitivities — and low humidity has prompted the National Weather Service to extend a red-flag wind warning for the region through Monday evening, past its previous Monday morning endpoint.