@matigo Apparently industry and policy responses were mostly successful in addressing the problem in the US (and probably Canada), but still perhaps an issue in some other places (Wikipedia says China and Russia due to extensive coal-burning). https://www.sciencehistory.org/distillations/podcast/whatever-happened-to-acid-rain
Wikipedia also mentions acid fog. :)
Occasional pH readings in rain and fog water of well below 2.4 have been reported in industrialized areas.[6] Industrial acid rain is a substantial problem in China and Russia[14][15] and areas downwind from them. These areas all burn sulfur-containing coal to generate heat and electricity.[16]