Weather Balloon 350 g


We believe in providing our customers with the highest quality products. Our 350 g balloon is no exception. Although it is more expensive than the Chinese and Indian weather balloons, its quality is far superior. This enables you to achieve higher altitudes with a smaller weather balloon, less helium, and less overall cost. This smaller balloon will reach altitudes that are typically only seen with our competitor's larger 600 g balloons.


Neck Diameter 3 cm
Burst Altitude 26 to 29 km / 85,000 to 95,000 ft


Balloon Performance

To calculate the optimal amount of helium you need for your balloon and the maximum altitude possible for a given payload mass, see our Balloon Performance Tutorial.


Want to know how soon you can have your Weather Balloon delivered to your doorstep? Visit our Shipping page to find out.


In the spring of 2014 we flew a 400 g payload with our 350 g balloon to an altitude of 30 km / 99,000 ft! The current altitude record for our 350 g balloon flying our Eagle Pro Kit is 27,746 m / 91,030 ft.

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