The National Weather Service issued a Heat Advisory for central and southern Ohio on Saturday due to high heat and humidity.

A heat advisory for the Hillsborough County area was expected to last until Monday, as temperatures could feel up to 109 degrees, weather forecasters said.

Dangerous heat continues across the U.S. as millions see feels-like temperature reaching into the 90s and 100s from the Southeast to the Midwest.

Weekend weather planner: Oppressive heat will be sticking around The oppressive heat continues as we head into the weekend.

As extreme heat continues to grip the region, the American Red Cross is emphasizing the importance of staying hydrated to prevent heat-related illnesses.

High pressure will build into the region, resulting in dangerous heat and humidity throughout the weekend and even into the start of next week.

Meteorologist Dalencia Jenkins says we are in an Alert Day due to the heat advisory in Maryland.

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Medical emergencies due to extreme heat surge in Indianapolis. EMS crews face increased workload as heat-related injuries rise.

As another bout of sweltering heat is set to hit Massachusetts, the MBTA is alerting riders that the extreme heat could cause delays on the commuter rail on Friday.