Low humidity, especially when accompanied by high temperatures, presents a huge challenge to making bubbles. Under such conditions, it can even be a challenge to make small bubbles with dime store wands and larger bubbles might seem impossible. Some general information about conditions is found in Ideal Conditions. The problem is exacerbated by heat. High temperatures even with good humidity are a challenge for most bubble solutions. As temperatures rise above about 78F or 25C, it becomes much more difficult to make lasting bubbles with most solutions.