I'm pretty sure this is the absolute worst we've experienced in the 15 months or so we've been in Beijing. We actually had to venture out this afternoon: we left when the AQI was 400+ and it went up to 800 whilst we were out -- when I found out, I'm sure the panic brought on an instant 'pollution' headache!

What's worse: I'm co-hosting a bunch of bigwigs flying in today/tomorrow -- they're sure to be impressed by China!

tb