This explains a lot. I was driving in LA on vacation with my family and we were surprised to see the full moon covered by a “dark cloud” that kept covering more

This explains a lot. I was driving in LA on vacation with my family and we were surprised to see the full moon covered by a “dark cloud” that kept covering more and more until I couldn’t see it for a while. The evening sky just made it seem like it must be cloud or smog in the distance.