Dew Point Definition

The concept of dew point refers to the moment from which the water vapor condenses in the atmosphere and it generates, according to the temperature, frost , mist or rocio.

In the air there is always water vapor, the amount of which is linked to the humidity level .When the relative humidity reaches 100%, the saturation of the air occurs and the dew point It is important to note that the relative humidity is the link between the amount of H2O vapor in the air and the maximum amount of H2O that could be at the same temperature.

When it is said that there is a relative humidity of 72% at 18ºC , for example, it is mentioned that the air is home to 72% of the maximum amount of water vapor that can be 18ºC .If at that temperature , the 100% of relative humidity is reached, the dew point would be reached.

The dew point comes, therefore, when the relative humidity increases and the temperature does not change or when the temperature drops but relative humidity is maintained.

In addition to all of the above, it is worth knowing other data of interest about the dew point, such as the following:-It is considered that the dew point suitable for humans is 10º.-The experts in the Meteorological environment have exposed that this element can be used to know the ease or even the difficulty with which the outer layer of the skin gives way to heat.-In those places where it is considered that there is a high dew point, which exceeds , for example, the 20º, it is established that the sensation of humidity and of feeling hot flashes is very remarkable.That means, therefore, that the body of the people who are there is difficult to perspire and feel comfortable.produced, it is estimated that the dew point should be between 8º and 13º, while there should be no wind and that temperatures reach a value between 20º and 26º.

Specifically, the actual existing table on the dew point and its classification is as follows:-Very dry air: dew point between-5º and-1º.-Dry air: 0º to 4º.-Dry well-being: 5º at 7º.-Maximum well-being: 8º to 13º.-Wet well-being.In this specific case, the dew point is between 14º and 16º.-Humid heat: 17º to 19º.-Suffocating humid heat: 20º to 24º.-Intolerable and very humid heat: 25º or more degrees of dew point.

If we return to previous values, we can say that, in case the temperature remains constant at 18ºC and the relative humidity reaches 100% , the dew point will be reached and, therefore, the water of the air will condense.If there will be drops in the atmosphere (fog) and drops will also appear on the surface (the dew).These drops in suspension or on the surface, of course, they don't get wet as if it were a precipitation (rain).