Atmospheric mist
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">atmospheric mist</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for haze that I've seen before include "Vapour" , "Lack of definition or precision" , "Daze, fog" , "Mist or shimmer due to heat" , "Film" .)