Saucer shaped object with glowing orange light that vanished behind a solitary cloud in broad daylight.

I was about 8 or 9 years old and was with my sister's female friend who was 18 years old and we were standing near the bay about 3:00 in the afternoon when something caught both our attention in the sky, without looking at each other we said at the same time "do you see that?", 
we saw way up in the sky a saucer shaped object that was light colored with a orange glowing light underneath it. This object was flying in the air and then changed course and went straight up at an angle into a small isolated cloud and never came out. 
We also saw a small airplane in the same vicinity and wondered if the pilot had seen it too.