Hong Kong: smog, smog, smog

These are reading for the Air Pollution Index . . . at midnight (00.00), 1 February 2007. Presumably, the air available for living things on a little island in the South China Sea is of slightly better quality. Presumably . . .

High, High, High Very High, Very High, Very High.

(a) Nitrogen dioxide
(b) Respirable suspended particulates
(c) Current API
(d) Past 24 hours (scroll down for charts): 24API

Environmental Protection Department (ha!)