Traditional Culture Encyclopedia - Weather inquiry - Why is the weather in Beijing so bad?

Why is the weather in Beijing so bad?

1, burning coal for heating, no air circulation;

2, there are many motor vehicles, and gas is discharged every day;

3, there are many people, and people eat horses and chew;

4. Location: Yanshan Mountain in the north and Taihang Mountain in the west, surrounded by mountains on both sides, can't be blown away without cold air activities.

5. Heavy industry pollution in surrounding Hebei also has an impact.

In terms of population, Canada is bigger than China and its population is smaller than Beijing. Is the air quality bad? If Beijing moves out 20 million yuan 1500, will the air be bad?