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Extreme heat moves through Bay Area, across U.S.

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Extreme heat is blanketing much of the Bay Area and country, with temperatures reaching up to 100 degrees in some areas. (KGO-TV)

It's not just hot in the Bay Area. Extreme heat is blanketing much of the country.

The heat index in many places topped triple digits, making it a dangerous day for millions.

WATCH VIDEO: Here are the best tips to stay safe during the hot summer months

The unrelenting heat in some places was more than a 100 degrees.

So far, the scorching heat is being blamed for at least 11 deaths, including a 12-year-old in Phoenix and a 3-year-old in Dallas this weekend.

WATCH VIDEO: Too hot to fly? Here's how heat could delay your flight

On Monday, there is still no relief for millions.

In Washington D.C., Metro officials took to Twitter saying to "expect system-wide delays because of high track temperatures."

On Philadelphia, the city kept cooling centers and misting tents open for the tens of thousands attending and protesting the Democratic National Convention.

In California, strong winds on top of the triple digit temperatures are still fanning more than two dozen wildfires across 10 states that are threatening thousands of homes and forcing thousands of families to seek shelter.

WATCH VIDEO: Sand Fire at 33,000 acres; 10,000 homes under evacuation

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