In dry seasons or dry environments, such as the winter in the north when there is heating indoors and the outdoor air is very dry, the fog cannon can humidify the outdoor air. In some industrial workshops with humidity requirements, such as electronics factories and textile factories, fog cannons can also be used to regulate the humidity inside the workshops.
For agricultural sites such as flower plantations and vegetable greenhouses, fog cannons can increase air humidity, which is beneficial for plant growth and reduces plant diseases and pests caused by dry air.