Can Balloons stay in a hot car?

Emily Jamison • April 21, 2025

Can Balloons Stay in a hot car?

We get this question all the time: “Can balloons stay in a hot car?” Whether you're picking up a balloon garland for your bestie's bridal shower or grabbing a bundle of helium balloons for a surprise party, it’s important to know how heat can affect your beautiful balloon decor.

The short answer? Not for long.

Heat and balloons are not friends. In fact, a hot car can be one of the worst places to leave balloons—especially during Indiana summers (or even those surprisingly warm spring and fall days). Here’s what you need to know:


🎈 Why Heat Is the Enemy of Balloons

Balloons are sensitive to temperature changes. Here's how they react:

  • Expansion: As the air inside the balloon heats up, it expands. This can make the balloon overinflate and pop—especially if it’s already filled tightly.
  • Helium escapes faster: If you’ve got helium-filled balloons, heat makes helium molecules move more quickly and slip through the balloon’s surface faster. That means your balloons will deflate much more quickly than usual.

Sticky situations: Balloons sitting against hot car interiors (especially dark leather or vinyl) can stick and pop or deform. It's not a good time.


🚗 What If You Have to Leave Them in the Car?

We get it—life happens. If you're in a pinch and must leave balloons in a car, here are some quick tips to give them the best shot at survival:

  • Park in the shade or inside a garage.
  • Crack the windows to allow airflow.
  • Cover the balloons with a light-colored sheet to reflect heat and prevent sticking.
  • Keep your time short—10 minutes max is best.
  • Never leave balloons in a hot car while running errands. Even a quick Target run can end in balloon sadness.


🎉 Best Practice? Pick Up Last

When planning your event, try to make balloon pickup or delivery your final stop. We want your balloon decor to look amazing when it's time to celebrate, not tired and wilted from a car sauna.

At Wild Blossom Balloons, we’re all about helping you keep your party stress-free and full of joy. If you're not sure when to pick up or how to transport your balloon decor safely, just ask! We’re always happy to help.




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