When the temperature rises above 40 degrees, what warning is issued for the high temperature?

The temperature of 40 degrees belongs to red warning, and the warning signal is divided into three levels, which are represented by yellow, orange and red respectively. The high temperature warning signal is divided into three levels, which are represented by yellow, orange and red respectively. Temperature is a meteorological term, generally referring to the temperature of the atmosphere. The temperature in the weather forecast refers to the air temperature measured outdoors without direct sunlight.

The international standard unit for temperature measurement is Celsius. The highest temperature is the highest temperature in a day, which generally appears at 14- 15, and the lowest temperature generally appears at 5-6 am. China uses centigrade scale, which is expressed in degrees Celsius. Generally, it is observed four times a day, and some stations observe it three times a day according to the actual situation.