Shanghai Weather

The weather in Shanghai is interesting, though not always in a good way. My first trip in September was decent, if not hot at 90+ degrees and modestly muggy weather. While perhaps not quite as hot/muggy as Hong Kong, there is nowhere near the air conditioning here. October weather was better and very pleasant, though December started to get windy and chilly - not in the tropics any more. The air is almost always hazy, sometimes with visibility measured in blocks, and that's not even in summer - I am not really looking forward to summer. Maybe a May or June visit and then U.S. vacation until September !