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The average PSI (per square inch) of a balloon before it bursts depends on the composition of the balloon in question. If, however, the balloon in question is a common latex balloon bought at any party store, the average PSI is less than 1/4 pound.

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10y ago
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9y ago

The psi of a balloon that is used to blow up for purposes such as a birthday party would be about 15. The atmosphere is about 14.7, and balloons have slightly more pressure.Ê

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Q: What is average PSI of a balloon before it bursts?
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