PORTLAND, Ore. (KOIN) — With record high temperatures hitting Portland Monday, fire officials have a warning for parents and pet-owners: don’t leave your child or pet inside a vehicle.

Warm weather might be comfortable outside, but a short stretch of time inside a closed car could be all it takes for the weather to become fatal.

“On an 80 degree day, the temperature inside a vehicle with closed windows can raise almost 50 degrees,” said Portland Fire and Rescue Division Chief John Nohr. “Those temperatures are just intolerable for pets and kids.”

Perhaps the scariest part is that often an hour isn’t even needed. On a day with highs in the mid-80s, temperatures inside a car can hit triple digits in less than 10 minutes.

Many people try to find a way around the heat by leaving the car running or the windows down, an idea officials say could lead to trouble.

“That just makes it a nuisance for someone to walk up and take the vehicle,” said Chief Nohr. “”I personally would look at it as a zero tolerance policy.”

Fire officials are also stressing that it doesn’t have to be sunny for temperatures to get dangerous. Even if the sky is cloud-covered, warm temperatures alone can be enough to create a deadly situation.