What does the weather forecast say about the travel index, dressing index? Is it 1 or 9?

According to the weather conditions, such as sky conditions, temperature, humidity, wind and so on, which have the greatest influence on human body's perceived temperature, dressing index classifies the clothes that people are suitable to wear, so as to remind people to dress appropriately according to the weather changes. Generally speaking, dressing index is high when the temperature is low and the wind speed is high. The meteorological index of clothing is divided into 8 grades. The smaller the index, the thinner the clothes.