Heights High School in Houston is dealing with a broken AC system during a heatwave. Techs are working on repairs as the school takes measures to cool students, some of whom were seen outside.

Phoenix forecast predicts clear skies and rising temperatures, with highs potentially reaching over 100 degrees by midweek and persistent sunny conditions.

The National Weather Service issued a Red Flag Warning for critical fire weather in southern New Mexico and west Texas, including strong winds and low humidity.