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Well, I thought about going into a detailed explanation of what RH is. But, I figured that your time is precious and valuable and you would much more prefer a concise explanation on what time of day RH is highest. So that is what I will do. You will need to know a few things prior to learning the answer. That is, RH is dependent on two things: temperature and water vapor content. When the temperature increases, the RH decreases. Think of it this way: RH can be represented as how close the air is to saturation. It can also be thought of as the likely hood of condensation (like I think of it). Condensation nuclei are more likely to collide and stick with water vapor molecules at slower speeds (lower energy). Thus, low temperature implies higher likelihood of sticking and condensation. Now, if there is a lot of water vapor in atmosphere, the probability of more water molecules sticking to condensation nuclei is higher (obviously). Higher temperature, which means, higher energy, implies lesser likelihood of condensation. Now that you understand that just apply it to day and nighttime temperature dynamics. At noon, temperatures are rather high, which yields a lower RH. Between 3 and 5 PM, temperatures are the highest and the RH is lowest. As the sun goes down, the land release longwave radiation into the atmosphere, lowering the temperature. RH starts to decrease. At around 6 AM or so, when the temperature is coolest, the highest likelihood of condensation occurs. Therefore, the high RH values occur at around 6 AM!

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11y ago
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13y ago

When cold air is warmed up.

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11y ago

Noon.

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Q: What time of day is the relative humidity at its highest?
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Related questions

Is it true that the highest relative humidity on a particular day usually occurs in the mid-afternoon?

No, it is not necessarily true that the highest relative humidity occurs in the mid-afternoon. Relative humidity can vary depending on various factors such as temperature, wind speed, and time of day. In some cases, the highest relative humidity may occur early in the morning or late at night.


What time of day is the relative humidity normally at a minimum?

Relative humidity is normally at a minimum just before the dawn of morning. This is usually the lowest temperature of the day, as well.


The highest relative humidity on a particular day usually occurs in the midafternoon?

False, a decrease in temperature results in an increase of relative humidity


At what time of day is relative humidity lowest?

3pm to 5pm


What part of the day is the relative humidity usually low?

It depends on the time of year.


What is the Relative humidity of chaparral?

The relative humidity of chaparral can vary depending on factors such as temperature and time of day. Generally, chaparral regions have relatively low humidity, often ranging between 20% to 60%. However, during cooler or more humid periods such as mornings or after rainfall, the relative humidity can be higher.


Would the average relative humidity on a rainy day be closer to 100 percent humidity or 50 percent humidity?

100%.


How did the relative humidity at different times of the day compare?

kool beand


As temperature increases during the day relative humidity usually?

Decreases.


Is relative humidity higher or lower during the hot hours of the day?

If the amount of moisture did not change, the relative humidity would be lower because there would be less moisture in the air relative to how much that hot air could hold.


Why do you need to be careful on a hot day when the relative humidity is high?

Cause you could die


It is a hot summer day with no wind the relative humidity is 50 percent as the sun goes down how would you expect the relative humidity to change?

As the sun goes down, the temperature drops and the capacity to hold water vapor in the air decreases increasing the relative humidity above 0 percent