Is it 40 degrees hot?

The weather of 40 degrees is considered as high temperature.

When the temperature reaches above 35℃, it is hot weather. Hot weather will make people feel uncomfortable, reduce work efficiency and increase the incidence of heatstroke, intestinal diseases and cardiovascular and cerebrovascular diseases. At the same time, high temperature weather will also have a great impact on agricultural production.

In meteorology, the physical quantity representing the degree of air heat and cold is called temperature, which is referred to as temperature for short. The international standard unit for temperature measurement is Celsius. The temperature mentioned in the weather forecast refers to the air temperature measured in the open air without direct sunlight (usually measured by blinds).