condensation on inner windshield

On the lower part of the windshield I get condensation. So the cool windshield blower takes it off. But what causes that? Mine is a Ford Taurus 2010 SEL.

Does this only happen after you've been driving the car with the A/C on? Maybe the drain for the evaporator housing is not letting all the moisture out from using the A/C and some of it evaporates through the defrost vent and on to the windshield. Does your Taurus have manual climate controls (knobs) or electronic (mostly buttons)? You could try placing cardboard or something over the top of the defroster vents when parked as an experiment to see if it's moisture evaporating through the vents.

-Rod