If something is evident, it's visible. If you blush furiously and start shaking every time your crush comes near, your infatuation will be evident to everyone.
Evident means conspicuously visible, often the mark of an action or a feeling. If a room is in total disarray, with everything pulled out of the drawers, it's evident that someone has been searching for something. If you leave the room in the middle of a tense meeting, your frustration will be evident. Evident can also simply mean visible. If you look closely at a key hole of your car door, small scratches will be evident in the paint.