Yes, balloons can be used outdoors, but the lifespans and appearance of the latex balloons will be affected by sunlight and heat: Direct sunlight and heat can cause balloons to expand and burst, while cold air can make helium shrink, and the balloon looks deflated.

If you are throwing an outdoor party and want to decorate it with balloons, I highly recommend you to place latex balloons in shaded or covered areas to ensure they remain vibrant and intact throughout your event.

You can also opt for foil balloons, which are more durable under sunlight and other weather conditions, ensuring your decorations look stunning for the duration of your celebration. Don’t put the foils into places that trap heat; the gases will expand and eventually pop.