Naples Weather
Weather in Naples - Posillipo - 10m above sea level - Real Time
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Charts, Averages and Extremes
Key:
Weather Station:
Davis Vantage VUE ™ Managed by Weather Display software.
Temperature:
expresses the degree of agitation of air molecules, using a scalar quantity called just 'can'. Italy is currently used in the 'degree Celsius', also called 'degree Celsius', whose symbol is: ° C. This unit is defined so that the values 0 ° C and 100 ° C correspond respectively to the melting point and boiling point of water at normal atmospheric pressure.
Dew point (dewpoint)
the temperature (° C) to which air must be cooled (at constant pressure) to achieve 100% relative humidity or, for saturated steam.
Heat index (Heat Index):
using the temperature and relative humidity to determine the sensation of heat in the air. When the humidity is low, the apparent temperature will be lower than the air temperature, since perspiration evaporates quickly and cools the body. When the humidity is high, the apparent temperature of the air temperature seem higher, because perspiration evaporates more slowly.
Humidity:
the ratio between the actual amount of vapor content and the maximum amount that the air mass may contain the same conditions of temperature and pressure. This ratio is usually expressed in percentage points. Values below 30% indicate the presence of dry or slightly moist air, while values higher than 70-80% are indicative of a high moisture content (eg in case of rain or fog).
Pressure:
may seem incredible, but a cubic meter of air, under standard temperature and pressure, weighs nearly 1.3 kg! The column of air above the land surface, concentrated mostly in the troposphere (the first 15 km), then exercises, with his weight, a pressure that is called just air pressure. The unit most commonly used by meteorologists to express the value is hectopascals (hPa) or, equivalently, the millibar (mb). Since air pressure decreases as elevation increases, the absolute pressure values, recorded by various meteorological stations are conventionally compared to sea level. In essence the case that, in order to compare the data collected from stations located at different heights, there are concerns to provide a value that is independent of the altitude at which the measurement is made. The average atmospheric pressure at sea level is 1013.25 hPa: disturbances in the atmosphere moving air masses of different nature (cold and dry, hot and humid, etc..), Causing an oscillation of this value of 'order of tens of hPa.
Rain:
the measuring unit is mm, equivalent to one liter of water per square meter of surface.
Winds:
indicates the direction of the wind and its speed.
Chill (Wind Chill):
quantifies the chill felt by our bodies due to exposure to wind. A mass of air (temperature lower than body) which affects the skin, it causes a loss of heat by evaporation is greater the higher the speed of the airflow itself. This means that our body perceives temperature apparently lower than that actually present.
