What happens when the air around you has 100% relative humidity? Please Explain.?
350316
A reading of 100 percent relative humidity means that the air is totally saturated with water vapor and cannot hold any more, creating the possibility of rain. This doesn't mean that the relative humidity must be 100 percent in order for it to rain -- it must be 100 percent where the clouds are forming, but the relative humidity near the ground could be much less.\n\nHumans are very sensitive to humidity, as the skin relies on the air to get rid of moisture. The process of sweating is your body's attempt to keep cool and maintain its current temperature. If the air is at 100-percent relative humidity, sweat will not evaporate into the air. As a result, we feel much hotter than the actual temperature when the relative humidity is high. If the relative humidity is low, we can feel much cooler than the actual temperature because our sweat evaporates easily, cooling us off.
803179
Changes in air pressure and possibly humidity.  Your body turns into a barometer.
709288
the air is already saturated with moisture and cant hold much more, so the sweat on your skin stays instead of evaporating which is a natural cooling process
1001478
Good question.  Humidity itself has a negligible affect on temperature.  What it does change dramatically is the heat content of air.  This means that humid air can 'carry' much more heat than dry air.  \n\nNow, humidity does change how we perceive the temperature.  And its exactly for the reason above.  On a rainy foggy day with the temperature at 3 or 4 deg (~38 F) have you ever noticed how cold you get?  Just standing around, you begin to get fidgety just to keep warm.  But on a dry night with big fluffy flakes of snow and a temperature of -3 deg, you can walk around comfortably for hours.  This is simply a function of how efficiently the air takes heat from you body.\n\nNow, if you were doused in water, the evaporation rate in the dry air would be much faster, and you would get hypothermia quicker than in the wet weather, so it gets complicated.  Hope this helps.
769934
It's the actual temperature with humidity, wind chill factor (if applicable), dew point and other conditions taken into consideration. There's actually a mathematical equation to figure it out but it may be hard to find since the calculations are done by computers these days.
524560
Yup, it's A.  The air is saturated with water, so the sweat on your body doesn't have the chance to evaporate to cool you.
566813
we sweat to lowe bodt temp, if the air is humid then the sweat remains on the skin as there is nowhere for it to go as the air is already saturated which short circuits our only cooling mechanism
45614
It's to do with humidity of the air. If you watch the weather report you may notice that humidity is expressed as a percentage. This is how 'full' the air is with water vapour. If the air is nearly empty (low humidity) then water will evaporate more quickly. If the air is full (high humidity) the water will evaporate more slowly (it may even receive more water from the air!).\n\nHere is the key: hot air can hold MORE water than cold air. So even if say a gallon of water is the most that some amount of air can hold, if you the air up the air will no longer be 'full' (for example it might be only 70% full, hence 70% humidity).\n\nThis is not a complete answer as I do not know everything about it. It's pretty advanced for 5th grade (I learnt about it in the 11th grade!). For more information look up EQUILIBRIUM in chemistry.
348230
static electricity.  If the air is very dry in your house, this can happen, especially on carpet or upholstered furniture and then touching something metal or electronic.  We have this problem too, especially in the winter.  We got a room humidifier and it has really helped.  It adds water to your air.
532719
On body regulates it's heat through persperation.  It's not as much the temperature that makes it feel hot as the humidity.  The higher the humidity the less moisture evaporated from the skin thus reducing the cooling effect.
159439
Relative humidity is the amount of water vapor a temperature can hold, Higher temperatures can hold more water vapor.
420075
generally humidity..\n\nit has two definitions. one is the grams of moisture per kilogram of dry air, is the humidity ratio. other is the the weight percentage of the moisture per kilogram dry air, the relative humidity. first one is designated with w (omega) and the other is phi.
293232
the more overcast and humid the air is, the denser it becomes. same happens in case of cold condition. when this happens, the dense air moves the ball more than a light air
586003
Air Pressure.  The humidity and such in the air is higher and therefore holds more warmth.\n\nAt higher altitudes, where the air is less dense, there is greater distance between particulates and heat is lost faster.
264700
There are many properties but the two most important are:\n\n1. Temperature (cold or warm air mass) - this affects the density of the air mass as well as it's relative humidity, dew point, how it interacts with other air masses of different temperatures, etc. Temperature is the main driver for what types of weather systems will be generated within an air mass.\n\n2. Absolute humidity - the actual water content of the air mass all attributes to the types of weather systems it will generate, and where highs and lows will form.\n\nAlso, air masses can be moving or stagnant, stable or unstable, constant or dynamic, and I'm probably forgetting others.
182135
A parcel of unsaturated air that rises in the atmosphere will cool by 1C per 100 m.\n\nSo if your parcel is 30C at the surface, it will be 20C at 1000 m.  However, if the water vapor in the air condenses before it has reached 1000 m, the answer would be different (and the answer would depend on the humidity of the air).
15646
Humidity adds to the heat as well as the cold. \nIf the air is saturated with water, and it's also cold outside it will make it so much colder. When it's hot outside and there's high humidity it also makes it hotter, you wouldn't think so, but it feels a lot like a sauna.