How does high indoor humidity in summer cause mold in a house?

I understand in attics that lower temperature air at night is not able to hold the moisture, so moisture condenses, which can cause mold.But in the conditioned space, when outside… I understand in attics that lower temperature air at night is not able to hold the moisture, so moisture condenses, which can cause mold.But in the conditioned space, when outside…Read MoreGreenBuildingAdvisor