The calculator will calculate the relative humidity for values of temperature and dew point entered.
““Relative Humidity is a measure of the quantity and moisture content material at a selected temperature and dew factor.”
\[Td = \frac{a \cdot (\ln(RH/100) + \frac{b \cdot T}{c + T})}{a - (\ln(RH/100) + \frac{b \cdot T}{c + T})}\]
Where:
let's think on a selected day the air temperature is 30°C and the dew factor is 20°C. what's the Relative Humidity (RH)?
Given:
T = 30°C
Dew point = 20°C
The constants for water are:
\(A = 611.21 \, \text{Pa}\)
\(B = 17.502\)
\(C = 240.97°C\) at a temperature of 30°C
Solution:
The relative humidity equation is:
\[e = 611.21 \cdot \exp\left(\frac{17.502 \cdot 20}{20 + 240.97}\right)\]
Calculate \(e\):
Measure relative humidity by calculating "e".
\[e \approx 611.21 \cdot \exp\left(\frac{350.04}{260.97}\right) \approx 611.21 \cdot 1.480 \approx 905.59 \, \text{Pa}\]
Calculate the Saturation Vapor Pressure
(\(e_s\)) at 30°C using the same formula but with a temperature of 30°C.
\[e_s = 611.21 \cdot \exp\left(\frac{17.502 \cdot 30}{30 + 240.97}\right)\]
Calculate \(e_s\):
\[e_s \approx 905.59 \, \text{Pa}\]
Now the relative humidity is:
\[RH = \frac{e}{e_s} \times 100\]
Insert the values of \(e\) and \(e_s\):
\[RH = \frac{905.59}{905.59} \times 100 = 100\%\]
you could test the RH of the air at a particular temperature and strain with our Relative Humidity Calculator. it's going to give you on the spot output in order to allow you to analyze your manual calculations quicker.
| Actual Vapor Pressure (hPa) | Saturation Vapor Pressure (hPa) | Relative Humidity (%) |
|---|---|---|
| 10 | 20 | 50% |
| 15 | 25 | 60% |
| 20 | 30 | 66.7% |
| 25 | 30 | 83.3% |
| Temperature (°C) | Dew Point (°C) | Relative Humidity (%) |
|---|---|---|
| 30 | 20 | 52% |
| 25 | 18 | 60% |
| 20 | 16 | 73% |
| 15 | 12 | 80% |
Humidity is the degree of the amount of water vapor in the air at a selected temperature and pressure and the phenomenon is referred to as the moist bulb effect. Humidity is without delay proportional to the amount of water. in the weather forecast, the humidity is referred to as the relative humidity
If the relative humidity is a hundred percentage then the dewpoint temperature and actual air temperature are the same.
The ideal relative humidity for health and luxury is someplace among 30-50% humidity.
Relative humidity corresponds to the proportion of moisture present in the atmosphere relative to the peak moisture capacity at a specific temperature. It influences climate variables, personal well-being, and a range of commercial operations such as food preservation and climate control systems.
A humidity calculator tells us how humid the air is by looking at the temperature and how much water is in the air. By inputting these figures, the calculator offers an exact rate, aiding in weather estimation and habitation temperature adjustments.
Too much moisture in the air stops sweat from drying, making it tough for the body to get cool. This makes your skin feel gross and uncomfortable, especially when it's hot outside, as your body tries to stay cool.
Under normal conditions, relative humidity does not exceed 100%. Nonetheless, in exceptional circumstances such as mist or oversaturated clouds, hydration might exceed 100% before condensation transpires, resulting in rainfall.
Yes, temperature has a direct impact on relative humidity. When it gets warmer outside, air can hold more water in it, so as the air temperature goes up without any extra water being added, the amount of moisture in the air compared to how much it could hold goes down. Conversely, as temperature drops, relative humidity increases.
Heating the air increases its temperature, allowing it to hold more moisture. Nevertheless, if extra dampness is not included, the environmental moisture percentage falls, causing the air to feel arid. This is why heating systems often cause dry skin and static electricity.
In very humid conditions, mold proliferation and respiratory issues may arise, contrastingly, in arid conditions, skin dryness, throat discomfort, and heightened infection risks could occur. Maintaining an optimal humidity level is crucial for comfort and well-being.
At evening, heat decreases, lowering the air’s capacity to hold water vapor and boosting relative dampness. Throughout the day as it gets hotter, the air can handle more wet stuff, making the dryness level go down.
Air conditioners not only cool the air but also reduce humidity levels. Elevated moisture levels can render a space seemingly hotter than it genuinely is, whereas diminished humidity aids in sustaining a pleasant indoor atmosphere without the need for overheating.
Absolutely, elevated moisture levels can result in water vapor accumulation within gadgets, which may cause rusting or electrical disruptions. A humidity level that is too low also increases the chance of static electricity, which can hurt fragile electronic parts.
