The dash is cooked. Is that sand laying on the wiper blade? Was this car exposed to desert heat and sand for years? Can you feel roughness like it was blasted with fine sand?
That's what I'm guessing, it's been 'sandblasted' with fine grit. My '95 Neon after decades in ND wind-blown grit had a windshield that looked very similar to that.
And thanks for posting the solution that is a common one
And thanks for posting the solution that is a common one 
