Meteorologists warn week ahead in US will have dangerous temps: 'Heat is not to be played with'

Temperatures are expected to rise significantly in the coming days. A prolonged period of hot weather is forecast to affect many areas.

Further details are available from meteorologists, who warn of a strong heat wave. The duration of this heat wave is at least a week, possibly longer.

In many areas, temperatures will be much warmer than usual, even at night, which can have serious health implications.