How do you combat a bad windshield day?

Driving to work this morning, I could never get control of the “humidity” of my car. I can only describe this situation as my glass surfaces being a magnet for the humidity outside.

Typically, I keep the interior quite cold, and this morning my windshields, side windows, etc. continually fogged. I tried what I thought were the remedies, including heating the windshield, opening the windows, making the interior hotter and colder—and nothing seemed to work.

I did stop for gas this morning, and I left my car door open while filling the tank; I can only assume that was my downfall. But I seemed to be the only car on the road experiencing this problem. I never fully overcame the situation and drove for more than a half hour with intermittent wipers clearing my view.

Is there someone among us who can tell me what I should have done.

Many thanks—BTW—long-time lurker, first-time poster.