A question, why can’t Asobo try use the older 12 hour stream of data instead of this post processed data/blended we now have? I’m 99% sure that is the issue. I think most of the users liked that but some wanted it to be a bit more accurate. But i think nobody wanted that completely changed into something else.
Then add those METAR data clientside only on top of that as an optional feature. Feels like many of those that request to have it more accurate doesn’t need the fluidness of weather anyway? Then i can’t see the point of trying to do the impossible to make those 2 completely different sources fit.
Then you asked about coordinates of that issue with generic type of weather. Well to me it’s all over the world.
Pre su7 i had varied type of weather depending on where i were flying in the world. Now it looks and feels same all over the world. The location i would say is global, not a specific location.
Correct me if i’m wrong @SealedVolcano50. And if you can, please help and provide location 
I can try provide both data from Meteoblue that shows lower layer fog together with screenshot from the sim.
Here is a good example. Should be a lower level fog/haze at this location
Cross section shows a thin layer of haze/fog
I’m not sure how much of help this is but i think it’s a bit funny when Asobo had meteorologists as partners and need help from us users. They actually had weather in the sim, accurate or not but it were fluid and varied as weather is. Some elements were missing or too much (lightnings). I think they should get back to the roots of this sim weather. At release it were amazing. Fluid and dynamic as advertised. It were not always accurate but thats to expect when using a forecast model. But it will behave more realistic. I think they should have developed a clientbased METAR system instead of destroy the Meteoblue only weather we had. Then we could have chosen what we wanted to use.
But here we are. Hope they nail it soon