Never leave children, the elderly or pets in a parked car, not even for just a few minutes. The air temperature inside a car rises rapidly during hot weather and can lead to brain damage or death. Cracking the window to let air in does not protect kids from hyperthermia. A final reminder - take care of your pets. In many ways, dogs and cats react to hot weather as humans do.
Offer pets extra water and be sure to place the water dish in a shaded area if outdoors.
Make sure pets have a protected place where they can get away from the sun.