What a difference a day makes. On Tuesday evening the sky was as clear as I'd seen it since the winter pollution rolled in. On Wednesday morning the PE teacher had to send an email out to parents to say that the school was monitoring the air quality and may suspend heavy breathing during sports practice. This morning isn't quite as bad but it's back to the "unhealthy for sensitive groups" category.

There's a great website, http://aqicn.org/, that gives you a real-time map of the world's air pollution levels. I look at it every day but I think I'm mostly torturing myself. My consolation is that at least Taiwan isn't as bad as China.