What is the difference between the haze weather changes from June to April in 65438?

With different components, fog is composed of water droplets; Haze consists of dust particles, smoke particles or salt particles;

2.

The relative humidity is different. Fog is a phenomenon of water vapor condensation, which requires high relative humidity, generally above 90%. Haze is a collection of dust particles, smoke particles or salt particles, and the relative humidity of the air is mostly below 80% when it is formed.

3.

The maintenance time is different. Fog has the characteristics of locality and short time, and its concentration changes rapidly when it is formed.