Chas Pope, a Briton working for ARUP in Beijing, posted this on Twitter yesterday, January 1:
Real Time Air Quality Index/Screen captureA look at the Real Time Air Quality Index There is a big bump in the PM10 index just about at the time the video has been shot, where I have added the arrow. Perhaps this is how one will soon have to dress to go outside for a run, or even a walk:
Beijing's subway ads offer a glorious glimpse of our dystopian future. pic.twitter.com/amM5NZx8fU— David Ramli (@Davidramli) January 2, 2017
Time lapse video of smog moving into Beijing will take your breath away
Or at least, it will make you want to hold it.