Last time I did 5% tint all around it was storming at night and I couldn’t see a damn thing so I had to wait it out. That, and trying to make unprotected left or right turns are a pain in the ass
I am a bit biased but actually it would still be better to have your windows tinted lightly than not at all,
I’ve got a 70% ceramic film that keeps out as much heat as limo 5%.
So you still get heat reduction and protect your interior from heat and UV damage. Win, win.
It doesn’t have to be dark to work.