I would argue that astrology is in principle testable and it should be able to make concrete predictions. Obviously, popular astrology uses such woolly terms that all of the predictions can be interpreted as accurate to the believer.
However, the few times that anyone has tried to verify astrological predictions, it's turned out to be false.
However, the few times that anyone has tried to verify astrological predictions, it's turned out to be false.
https://psycnet.apa.org/record/1986-30007-001