Hello! I took my Mavic out and i flew into a fog for around 10 minutes. Is it safe to fly in fog?

It's safe only if:
1. You don't hit anything you couldn't see.
2. Moisture in the fog doesn't screw with the electronics and or fog up sensors.

Having said the above, I've flown successfully on 2 or 3 foggy days as long as the drone was in VLOS, visual line of sight.

Hello and good day Filip Kyzek. Thank you for reaching out and for the inquiry. It is not recommended to fly the aircraft on foggy environment. When flying on foggy environment, the vision system of the said drone  might be affected, if the vision system is affected an accident might happen. Thank you for your understanding and support. I will be posting a list on how to utilize the vision system of your drone properly. Thank you.