News tagged with humidity

Low back pain? Don't blame the weather

Australian researchers reveal that sudden, acute episodes of low back pain are not linked to weather conditions such as temperature, humidity, air pressure, wind direction and precipitation. Findings published ...

Jul 10, 2014
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Indoor marijuana grow operations pose healthy threat

(Medical Xpress)—Houses and other buildings used to grow marijuana indoors contain high levels of mold, which could pose a health threat to residents living there and law enforcement agents investigating them, according ...

Sep 17, 2012
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Dangerous air quality alert issued for toxic mold

The Midwest is under an air quality alert for dangerous levels of mold. The Midwest mold count today is 60,000 – well over the 50,000 threshold that signals a dangerous air quality warning.

Sep 07, 2012
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Humidity

Humidity is a term for the amount of water vapor in the air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of water vapor and other constituents of air, and humidity is defined in terms of the water content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistats; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio of the water vapor content of the mixture to the total air content (on a mass basis). The water vapor content of the mixture can be measured either as mass per volume or as a partial pressure, depending on the usage.

In meteorology, humidity indicates the likelihood of precipitation, dew, or fog. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.

This text uses material from Wikipedia licensed under CC BY-SA