"Scorching Heat Wave Sweeps Across US, Testing Resilience and Solar Power"

A dangerous heat wave is set to continue across the southern US, with temperatures in the 100-degree range and punishing humidity affecting over 110 million Americans. The heat index values of 110 to 120 are expected in cities from Dallas to Houston, New Orleans, and Nashville. Meanwhile, Canadian wildfires are causing poor air quality, affecting over a third of the US population. Severe thunderstorms and heavy rains are also possible in the central Plains and Ohio Valley.