Heat plus a little humidity
A little monsoonal moisture will start to leak in from Arizona later this afternoon, making things a bit less comfortable. That moisture will also offer up a small chance of Mountain and High Desert thunderstorms this afternoon.
The monsoonal flow will likely continue through the end of the week.
This will elevate dew points and humidity values through Friday. The week should be modestly drier, but the temps don't change much moving through the next several days.