smog over Beijing

I was positively surprised to see clear blue sky the first day I came here. there are good days, when the sky is blue the whole morning, there are also bad days when you can't really say if it is clouded or smoggy. it doesn't bother so much while breathing, but after walking around for half an hour you can feel the dust in your mouth. at the end of the day the hair gets really dusty and feels weird when you touch it. but I guess one can deal with it! can't wait for the winter and the snow to cover the dust a little bit.