If workers have to work at the high temperature of 100 degrees Celsius, the working hours should be strictly controlled, and the working hours should not exceed one time.

High temperature means higher temperature. In different situations, the specific value is different, for example, in some technologies, it refers to thousands of degrees Celsius or even more; The highest daily temperature in meteorology in China is above 35℃, which is called high temperature weather. Meteorologically, the average monthly temperature in China is not lower than 16 degrees Celsius, which is called universal high temperature (used for climate description). In China's meteorology, the average monthly temperature in summer is not lower than 20 degrees Celsius, which is called high temperature in summer (also used for climate description).

High temperature weather will have a serious impact on human health, transportation, water and electricity consumption.

High temperature weather with extremely high temperature, strong solar radiation and low air humidity is called dry heat and high temperature. In summer, northern China such as Xinjiang, Gansu, Ningxia, Inner Mongolia, Beijing, Tianjin, Shijiazhuang, Shandong Liaocheng and other places often appear.

Because of the rich water vapor and high air humidity in summer, when the temperature is not too high (relatively speaking), people feel sultry, just like in a steamer. Such weather is called sultry and high temperature. Because people like to take a sauna in this weather, it is also called "sauna day". It often appears in China's coastal areas, the middle and lower reaches of the Yangtze River and South China.