Diseases, Conditions, Syndromes

Droplets with coronaviruses last longer than previously thought

It is easier to get infected in winter than in summer—this is true for the Corona pandemic, for influenza and for other viral diseases. Relative humidity plays an important role in this. Outdoors, it is much higher outside ...

Diseases, Conditions, Syndromes

Reduced humidity linked to increased COVID-19 risk

A study conducted in Sydney during the early epidemic stage of COVID-19 has found an association between lower humidity and an increase in locally acquired positive cases. Researchers discovered a 1 percent decrease in humidity ...

Health

Heat, humidity, and heart disease

It's no secret that high temperatures or extreme humidity can negatively impact one's physical health, particularly those afflicted with cardiovascular disease. Previous literature has even suggested that cardiovascular disease ...

Diseases, Conditions, Syndromes

Flu virus' best friend: Low humidity

Yale researchers have pinpointed a key reason why people are more likely to get sick and even die from flu during winter months: low humidity.

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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