The meteorologists propose the differences in average temperatures between Saturdays as opposed to Thursdays, for example, may stem from workweek-induced pollution. Forster explains that during the workweek more people commute and more factories are in operation. Both contribute to the amount of particle pollution in the air.

　　气象学家们提出平均气温的差异可能是工作日中产生的污染造成的，例如周六和周四相比，平均气温就有一定的差异。福雷斯特解释说在五天工作日中，乘车上下班的人多，进行生产的工厂也多，这都会增加空气中的微粒含量，对大气造成污染。

　　Particles can influence cloud cover, but the kind of particles released into the atmosphere can lead to different changes, says Forster.

　　微粒会影响云量，但是释放到大气中的不同颗粒会造成不同的变化，福雷斯特说。

　　Lighter particles provide a surface for cloud droplets to form. This leads to an increase in cloud cover, which, in turn, can lead to an increase in temperature since clouds have an insulating effect.

　　较轻的微粒能够提供云滴形成所需要的界面，这样会增加云量，进而导致气温的升高，因为云有保温的作用。