I really hate to bring this up but I believe you have bugs. Take a look at the underside of the leaves in question with a 40x loop. Also tagging in @Beachwalker. He is pretty darn good at ID ing bugs.
humidity has been sitting around 50% and the temp has been 77 during the day. Started as a few yellow spots then started to have this brownish dirt looking patches
I really hate to bring this up but I believe you have bugs. Take a look at the underside of the leaves in question with a 40x loop. Also tagging in @Beachwalker. He is pretty darn good at ID ing bugs.