The air in your tires takes up more space if the weather is warm, while the air takes up less volume when the temperature is low. The tire inflation pressure typically changes by 1 to 2 psi for every 10 degrees. As you drive the car and the tires warm-up, the tires' pressure can rise by one psi every five minutes in the first 15 to 20 minutes. It's necessary to monitor the tire pressure once a month to prevent the effects of over-and under-inflated tires. Chances are, once your pressure is considerably poor, your car may not signal you, so it's necessary to inspect your tires manually.