Balloon from 6th of September. I was just randomly biking around as I saw it coming up from the horicont. It didn't stay long and I only got couple of photos before it to dissappear again... Also yes, the air was full of all sort of flies as you might see...
Taken in the island of Tarvo(between Laajalahti - Iso Huopalahti or Helsinki - Espoo),Finland, facing west/north-west.
It says www.kuumailmapallo.com on the side of balloon( [link]
Other views by me: