A heat wave is forecasted to affect the United States this week, according to the National Weather Service. The heat is expected to intensify ahead of the July Fourth holiday. High humidity will accompany the rising temperatures, making the heat feel even more extreme.

A heat dome is building, but details about its impact on specific areas are not provided here. For more information, including maps and forecasts, readers can refer to the source for further details and warnings about the upcoming heat wave.