These types of weather have haunted me the most in trying to gain my PPL. I have read the MET books and found that they only give a general idea as to the origin and dissipation of said. It seems that Fog is different, in saying that there are two types (convection and radiation) and that it generally follows a pattern, I.e. it appears, usually early morning and then disappears, in late morning - Haze seems different though.
So is it that this time of the year brings the most? It seems that here (North West) we have had mist and haze every day for about a month now, and it just wont go away. Is this an Autumnal characteristic, and do you find that it limit's you a lot as well in your flying. Obviously, the weather as an entirety is a mystery and will never be fully understood (disclaimer)
Regards,
Maz