Satellite picture of smog bank trapped on China coast, taken November 6, 2009. Source: NASA
If you rolled out of bed this today clawing at your throat like a French legionnaire in the Sahara, you might not be crazy: it might be the air. This jaw-dropping photo from NASA (taken November 6) charts the progress of a temperature inversion (i.e. smog bank) that has been trapped on China's coast for the past week.
That noise you hear? Your lungs, sobbing like babies.
Source: NASA Observatory



That area looks to be about 500km north of Shanghai. Beijing's air quality is notorious, but how is it around Shanghai?
Officially, not too bad. The current API is 47-61, depending on your district. Still not great by global standards, but far, far better than Beijing.
http://www.semc.gov.cn/home/index.aspx
@ Andrew
Don't believe the official reports, if you could see what the sensors at the Japanese, US and S. Korean consulates and embassies report, you'd find much higher numbers.
Isn't everything wonderful in Mordor?