Yes, balloons can absolutely be installed outdoors, and we have successfully completed many outdoor installations. That said, June through August can be especially tough on balloons in the Florida heat and direct sun.For the best results, we strongly recommend indoor installations during these months, or placing balloons in a covered, shaded area away from direct sunlight. If we feel an outdoor setup may not hold up well due to heat or weather conditions, we will always be upfront and let you know ahead of time.Please note that we are unable to return to repair or replace balloons that pop after installation due to heat, sun exposure, or outdoor conditions.