Followed this thread with interest. I spent 14 years in HK, leaving in '99. I always remember the Novembers as having great wx, low humidity, great vis. and comfortable temperature.
I operated into HK 3 times last month (from Asia) each time it being poor vis. I was not aware that the pollution had become so bad. We were always concerned about pollution, but we preferred to live down town, rural living being an option. Now it seems you can't escape it. Thought I might go back to live one day, think I'll just nip back for a beer with old mates now.
Just hope it improves for you all.
DW