Acid rain is not acidic enough to burn your skin. While strong acids can cause severe burns, acid rain is much weaker. The acidity in rain comes from naturally occurring oxides in the air, giving it a pH value between 5 and 6.
However, acid rain can still irritate the eyes, skin, and mucous membranes. This irritation is caused by the presence of sulfuric and nitric acids, which are components of acid rain. These acids can cause inflammation and discomfort upon contact.
It's important to note that while acid rain itself won't burn your skin, strong acids like sulfuric acid can cause severe burns. These acids are found in industrial settings and should be handled with extreme caution.