Saharan smog
There's a bad outbreak of, well, I guess you'd call it air pollution across some parts of Europe at the moment. Sand from the Sahara. It's been sucked up somehow into the wind and subsequently blown across certain areas in Western Europe. The UK is one of these. The south of France, at least the bit where I live, is another. Horrible day, especially for asthmatics. And cars. We washed the dust of the car this afternoon and less than two hours later it was already covered again!