A 'heat dome' is driving dangerous heat across the U.S. into the July 4 weekend

Dangerous heat is anticipated to affect the US, including the San Antonio area, as the July 4 weekend approaches. This heat is attributed to a 'heat dome'. The National Weather Service has issued warnings of the impending heat, which is expected to impact large parts of the country.

For more specific information on the heat and its expected impact, readers can refer to the National Weather Service or Texas Public Radio for further details and updates.