I was noticeably hazy yesterday, and people have been mentioning itchy throats etc. I a totally unrelated development, I put new wiper blades on my car yesterday, and the difference in visibility is remarkable! PS, the own brand sets from Halfords would have been £30 for all three. Ordered Bosch wipers from Euro Car Parts, with free 3 day delivery - £17 the lot. Hence, or otherwise, Halfords is a rip-off!