Meteorologists say temperatures across Boston and much of southern New England will climb into the 100s later this week ahead of Independence Day celebrations.

Millions across the central and eastern U.S. could face days of triple-digit heat index values.

More than 130 million Americans in southern and Great Plains states were under moderate to severe heat risk over the weekend

Sweltering conditions are expected to last through the weekend

A prolonged, intense heat wave will make temperatures feel as hot as 115 degrees Fahrenheit in the eastern U.S. this week