I think its a pity we (in the UK / Ireland) don't give "pilot reports" as in the US.
Very often I have been above the haze perhaps at only 3k, and have heard pilots below having difficulty with the conditions. I will always pass on that "its ok at 3000ft" or so.
We should all make an effort to pass on "useful" info to ATC so that other pilots benefit,
PLEASE DONT GIVE YOUR LIFE STORY TO ATC WHILE DOING SO.
I would suggest everyone (even UL and Microlight drivers) get some basic instrument training as it is easy to get caught out in low vis.
Tony