Arizona public health officials are asking people to pay attention to their hydration levels during the summer, even when the dry Arizona heat starts to get sticky during monsoons.

“Stay cool, stay hydrated, stay informed. The heat is a big deal," says Laura Oxley, a spokeswoman for the Arizona Department of Health. “Even with the Monsoons starting, it is important to be sure that you’re hydrated well enough, and that you’re paying attention to your body and listening and watching for signs of heat exhaustion.”

Several people have already been rescued from hiking trails in the Tucson area, and two people died in May, all related to the heat.

The National Weather Service in Phoenix says heat is the top weather-related cause of death in the state.

One health department tips is to drink fluids even if you don’t think you’re sweating or losing much water, Oxley says.