Why is it so hot in Hangzhou?

1, located in the subtropical monsoon climate zone, is hot and rainy in summer.

2. Dense buildings are not conducive to air circulation.

3. High population density.

4, automobile exhaust emissions, automobile exhaust has a thermal insulation effect.

5. The air humidity is high, and the temperature is less likely to be emitted compared with dry weather (the heat conduction of water is slower).