It would have been interesting to test the pH of the rain with paper tests. While they’re not nearly as accurate as a calibrated pH meter, it could have given us an idea of the acidity of the rain water.

Rain water is typically in the 5.6 range. If it was more acidic and truly “acid rain” it would have been lower and around 4.

But yeah it would be nice if someone who has access to equipment capable of analyzing samples could tell us what the chemical content of the recent rainfall.