Dew Point Calculator is a handy tool that answers all your questions regarding the concept dew point. Find Dew Point given the inputs such as temperature, relative humidity in the blink of an eye.
Dew Point Calculator: Have you ever wondered what is dew point and want to calculate it? If so, don't panic as you can make use of our Dew Point Calculator to calculate it in no time. Simply, enter the inputs like temperature, relative humidity and tap on the calculate button to get output i.e. dew point quickly. Learn about dew point definition, how to find relative humidity in certain conditions, formula to find dew point, dew point formation, comfortable dew point temperature, etc. in the later sections.
Dew Point in Simple Terms is nothing but the temperature at which water vapor begins to condense into water. For Example: If you have a high relative humidity in your room you will see dew forming on the window surface. It is because the surroundings of the window has dropepd below the dew point.
Relative Humidity is nothing but the ratio of current absolute humidity to the maximum absolute humidity for that particular temperature. In other words, we can say that the amount of mositure in the air compared to the maximum amount of air that the temperature can hold.
relative_humidity = 100% * current absolute humidity / max absolute humidity at current temperature
The Relative Humidity put in other words is the ratio of water vapor pressure Pw to Saturation Water Vapor Pressure Pws i.e. relative_humidity = 100% * Pw / Pws
To understand the relative humidity you need to know about absolute humidity at first. Absolute Humidity is nothing but the water content in air and is expressed in units grams per cubic meter. Formula for absolute humidity is absolute humidity = m / V where m is the mass of water vapor, V is the Volume of Air and Water Vapor Mixture.
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There are many equations that describe the relationship between dew point and relative humidity. Among all those we have compiled a Magnus-Tetens Formula that provides you with the accurate results for temperatures ranging between -45°C to 60°C. Dew Point Formula is given by Ts = (bα(T,RH)) / (a - α(T,RH))
Dew Point & Relative Humidity are closely related and it is difficult to understand the difference. Now that we have explained the formulas of dew point, relative humidity let us dive into the concept much better. Dew Point is the accurate measurement of moisture in air. The higher the dew point is the more mositure content exists in the air. Relative Humidity on the other hand is a value that depends both on temperature and pressure.
The greater the relative humidity is the closer the dew point is to the current air temperature. In a particular case when the air is satured maximum with water the dew point is equal to current temperature.
High Dew Point can result in discomfort. Usually, in high termperatures our bodies take more time for evaporation of sweat as the air is already saturated with water.
|Dew point||Comfort levels|
|<50°F (<10°C)||a bit dry for some|
|50 - 60°F |
(10 - 16°C)
|dry and comfortable|
|60 - 65°F |
(16 - 18°C)
|65 - 70°F |
(18 - 21°C)
|unpleasant, lots of moisture in the air|
| >70°F |
|uncomfortable, oppressive, even dangerous above 75°F|
There are several applications for dew point and they are listed as follows
1. What is Dew Point in Simple Terms?
Dew Point is the highest possible temperature at which water vapor can condense and form dew.
2. What is Dew Point Formula?
Dew Point Formula is given by the expression Ts = (bα(T,RH)) / (a - α(T,RH))
3. What happens if dew point is higher than temperature?
The higher the dew point rises, the greater the amount of moisture in air leading to discomfort.