Visibility IV / V
I waited for the fog arc since sunrise, but fell asleep when it was not visible. Otherwise, it was a wonderful morning with fog and swans. I woke up again, peeked out the window and there it was right in front, the best arch at my point. Luckily I was in a hurry, the arc disappeared within minutes of taking the pictures.
Edit: Welded, if I had been able to shoot a little higher, I would have included the reflections of the water properly. It would have been a full almond and a circle :-)