OKLAHOMA CITY (AP) -- With temperatures approaching or passing 100 degrees, landscapers, roofers, construction crews and others working outdoors are drinking more fluids and taking frequent breaks.

Lawn care owner Woody Brumley in Oklahoma City says he and his workers wear light colored clothing and drink plenty of water -- plus keep an eye on each other.

HR Holman with the Oklahoma City-County Health Department says that's exactly what should be done.

People should watch for warning signs relating to heat stress, such as feelings of being uncomfortable, lack of energy or a slight loss of appetite. Other indicators are dizziness, rapid heartbeat, diarrhea, nausea, throbbing headache, dry skin with no sweating, chest pain, weakness, mental changes, breathing problems, vomiting and cramps.

And the National Weather Service says no break from the heat is expected until at least late next week.