New Jersey has been sweating through weather in the 90's, and for some, it's more than just an annoyance.

Mario Tama, Getty Images

Mary Goepfert, of the New Jersey Office of Emergency Management, says the elderly, the very young and those with certain disabilities are most at risk of this somewhat insidious threat.

Unlike a hurricane or tornado, you cannot see or hear heat stroke. But it's real and it's dangerous.

Her advice if you're at risk?

"Stay inside. If you need to be outside, stay in the shade. If you are working outside, take frequent breaks. Make sure you are hydrated."

That means plenty of water. And if the heat seems to be getting to you, get to a cool place fast or seek medical attention.

Here is a list of do's and dont's issued by State Police Colonel Rick Fuentes, in concert with Sate Health Commissioner Mary O'Dowd:

  • Stay indoors in air conditioning as much as possible.
  • If you do go outside stay in the shade.
  • If your home is not air conditioned, spend at least two hours daily at an air conditioned mall, library or other public place.
  • Wear sun screen outside, along with loose fitting light colored clothes that cover as much skin as possible.
  • Drink water regularly even if you are not thirsty. Limit alcohol, and sugary drinks which speeds dehydration.
  • Never leave children or pets alone in the car.
  • Avoid exertion during the hottest part of the day.
  • Take a cool shower or bath.
  • Be a good neighbor, check on elderly and people with disabilities in your community who may need assistance keeping cool.