A heat wave bringing sizzling temperatures to the San Francisco Bay Area was originally forecast to peak on Tuesday. That has changed.

The Excessive Heat Warning has been extended for inland portions of the Bay Area, Central Coast, and the city of San Francisco through 11 PM Thursday. The Heat Advisory directly along the coastline has also been extended through 11PM Thursday. #CAwx pic.twitter.com/jR5OhsOh50

The SF Bay Area is poised to see temperatures soar to dangerous levels Tuesday in a rare October heat wave, including an excessive heat warning for downtown SF.

Downtown San Francisco reached temperatures in the 90s on Tuesday afternoon, a mark the area has not seen in nearly two years.

For a second day, temperatures soared past the 80 degree mark in San Francisco. In a city that is known for foggy cool temperatures, medical experts say the heat can be especially dangerous for people who aren't accustomed to it.