Why is Kashgar smog outside the chart?

Dust weather, industrial pollution, coal use and other reasons.

1. Sandstorm weather: Kashgar is located in an arid desert area and is affected by sandstorms in spring and summer. Sandstorms will carry a lot of dust and particles, which will lead to the deterioration of air quality.

2. Industrial pollution: Kashgar is an industrially developed city, and factories emit a lot of pollutants such as waste gas, smoke and dust. These pollutants are directly discharged into the atmosphere without proper control and treatment, causing serious air pollution.

3. Use of coal: Due to less precipitation, dry environment and insufficient energy supply, coal is widely used for heating or power generation in some households, enterprises and heating systems. This traditional way of energy use will produce a large number of harmful substances such as carbon emissions and particulate matter, which will have a significant impact on air quality.