Ian Currie wrote:
Plenty of mention about hazy skies today by forecasters even from one
now recognized in high circles but excellent horizontal visibility
and fairly deep blue sky in between the patches of cirrus and more
dense sheets of cirro stratus. A trip to a desert country or even
southern Europe would provide a more accurate description of haze. It
is quite remarkable how ice crystal cloud can be said to be hazy.
It is so simple to use an expression" a milky sky" than to say hazy
when it is not. Why constantly reinforce an inaccuracy.
Now I am off to give a talk to a group and I shall get then to look
out of the window and I might even mention an unmentionable word
"cirrus".

I can't see much wrong with the expression myself. I think the reference
is to the sunshine (not cloud) being indistinct which is one of the
meanings of 'hazy' in my dictionary.
Why should an adjective in general use be restricted to descriptions of
visibility just because the noun is also used technically for one
visibility range/obscuration type?

Tom Allen