What is the relationship between relative humidity and temperature?

Relative humidity refers to the percentage of water vapor pressure divided by the equilibrium water vapor pressure in the gas. That is, the ratio of absolute humidity to maximum humidity, and its value shows how high the saturation of water vapor is. At the current temperature, the water in the air is saturated and the relative humidity is 100%. When the relative humidity in the air exceeds 100%, water vapor will generally condense out. With the increase of temperature, the more water can be contained in the air, that is to say, the relative humidity will increase with the decrease of temperature with the same amount of water vapor. Therefore, it is necessary to provide temperature data and relative humidity. Dew point can also be calculated by maximum humidity and temperature.

The application of relative humidity is often used in weather forecast. Reflects the possibility of rain and fog. In hot weather, high relative humidity will make people (and other animals) feel hotter because it hinders the evaporation of sweat. Humans can therefore calculate the heat index. The Hong Kong Observatory will issue a "very hot weather warning" based on the temperature and relative humidity.

Degree is a physical quantity representing the degree of heat and cold of an object, and microcosmic speaking, it is the intensity of thermal motion of an object molecule. Temperature can only be measured indirectly through some characteristics of an object that changes with temperature. The scale used to measure the temperature value of an object is called a temperature scale. It specifies the reading starting point (zero point) of temperature and the basic unit for measuring temperature. The temperature has no high pole, only the theoretical low pole "absolute zero". "Absolute zero" cannot be achieved through limited steps. At present, the temperature scales widely used in the world are Celsius (C), Fahrenheit (F), Thermodynamics (K) and international practical temperature scales.

Temperature is the expression of the average kinetic energy between molecules in an object. It is worth noting that the system composed of several molecules or even one molecule has no temperature significance because of the lack of statistical requirements.

The temperature of gas in the atmosphere is the temperature, which is a common term in meteorology. It is directly affected by solar radiation: the more solar radiation, the higher the temperature.