You could just about look straight at the sun this evening when it
was at an altitude of 6°. By the time it had fallen to 2½° it had
disappeared entirely yet there was no cloud to speak of. Just grey
murk. This, someone should tell the weather presenters, is haze -
atmospheric particulates in suspension. It's been like it all day -
dirty and yellowish and not a trace of Ci or Cs. What would they call
it, I wonder? No mention of it in any forecast, in fact, rather the
opposite, the strength of the sun being warned against, implying a
deep blue sky. Perhaps they now have no word for this phenomenon.

Tudor Hughes, Warlingham, Surrey.