When are dangerous static charges more frequently generated?

Low humidity levels contribute to the formation of dangerous static charges because moisture in the air can help dissipate electrical charges. When the humidity is low, the air becomes drier, and there are fewer water molecules to facilitate the transfer of charge. This results in the build-up of static electricity, which can be a significant hazard in environments like airports where flammable materials and equipment are present.

In contrast, higher humidity levels have the opposite effect, as the presence of water vapor in the air helps to conduct electricity and neutralize charges. This is why static charges are more frequently generated in dry conditions, making low humidity a critical factor in safety considerations for airport operations and fire fighting.