Clima Storico — Punto di Rugiada

Microclimatev01.00 credits/fixed

Responsible:Niccolò Calandri

Historical Climate — Dew Point

Overview

The Historical Climate — Dew Point indicator shows the historical trend of dew point temperature at 2 metres above ground. For each day, mean, maximum, and minimum values are provided. The dew point indicates the temperature at which air becomes saturated with water vapour.

High dew point values signal high absolute humidity, favouring dew formation, fog, and conditions ideal for fungal pathogen spread. It is a more stable indicator than relative humidity for assessing atmospheric moisture content.

Calculation Methodology

Data come from the Open-Meteo Historical Weather API. The variable used is dew_point_2m (dew point at 2m, daily mean, max, min). Data are interpolated to the site's position.

Data Sources

Code	Name	Provider	Type	Coverage	Availability
`WRD_OPNMT_99`	Open-Meteo Historical Weather	Open-Meteo	db	Global	1940 - present

References

Lawrence, M.G. (2005). Bulletin of the American Meteorological Society, 86(2), 225-233.
Open-Meteo Historical Weather API

Data Sources & References

Sources

WRD_OPNMT_99

Methodology

Historical trend of dew point at 2m above ground. Open-Meteo variable: dew_point_2m (daily average, max, min). Source: Open-Meteo Historical Weather API. Unit: °C.