Where I live now there can be significantly acidic rain. The government posts measurements for many cities and there can be stretches for days or longer with reported pH of 3.2 or 3.1. I even saw 2.9 reported once.
While this can have quite serious environmental effects depending on a number of factors including total rainfall, geology, geography, soil composition just to name a few, my question is about the direct effect of rainfall this acidic on people and their possessions.
Just how dangerous or deleterious to people and their immediate possessions (e.g. clothing, other objects) would getting a bit of pH 3.1 rain on oneself actually be? Would it sting at all if it got in the eye? Discolor hair? Is there any basis at all to being collectively phobic of being touched by this rain specifically because of its pH?
I've tried searching the internet but there is a jumble of information there. As far as I can tell, pH 3.1 seems to be somewhere between a soft drink, and tomato juice, but this is from unreliable sources.
So I thought I would ask in Chemistry SE for a solid, scientific answer. I'm not looking for an opinion, or a reasoned answer (e.g. "if it was that dangerous, then..."). I'd prefer factual data, or references related to safety and effects of topical exposure to (mildly) acidic water.