Weather Overview

About

With Leaf Weather, you can access unified weather data at a field level. Below you’ll find more about what forecasted and historical weather variables are available and which data sources are supported through Leaf’s API.

Forecast

Leaf’s weather forecast service provides access to forecasted weather data for the past 5 days - up to 10 days in the future. The data can be fetched daily or hourly.

Properties

  • Cloud cover
  • Dew-point (2 m)
  • Evapotranspiration
  • Precipitation
  • Rain
  • Relative Humidity (2 m)
  • Short Wave Radiation
  • Long Wave Radiation
  • Snowfall
  • Sunrise
  • Sunset
  • Temperature (2 m)
  • Soil Temperature (0 cm)
  • Soil Moisture (0-1 cm; 1-3 cm; 3-9 cm; 9-27 cm; 27-81 cm)
  • Wind Direction (10 m)
  • Wind Gusts (10 m)
  • Wind Speed (10 m)

Data sources

Weather ModelNational Weather ProviderOrigin CountryResolutionForecast LengthUpdate Frequency
ICONDeutscher Wetterdienst (DWD)Germany2 - 11 km7.5 daysEvery 3 hours
GFSNOAAUnited States3 - 25 km16 daysEvery hour
Arpege & AromeMeteoFranceFrance1 - 40 km4 daysEvery 6 hours
IFSECMWFEuropean Union44 km7 daysEvery 6 hours
JMAJMAJapan5 - 55 km11 daysEvery 3 hours
GEMCanadian Weather ServiceCanada2.5 km10 daysEvery 6 hours
Warning

The service uses an option to provide the best forecast for any given location worldwide, based on the models available.

Availability by Weather Model

PropertyUnit of measurementDescription
meanTemperatureImperial: ºF; Metric: ºCMean daily air temperature at 2 meters above ground.
minTemperatureImperial: ºF; Metric: ºCMinimum daily air temperature at 2 meters above ground.
maxTemperatureImperial: ºF; Metric: ºCMaximum daily air temperature at 2 meters above ground.
meanSoilTemperatureImperial: ºF; Metric: ºCMean surface temperature (0 cm deep), which can be water or land.
minSoilTemperatureImperial: ºF; Metric: ºCMinimum surface temperature (0 cm deep), which can be water or land.
maxSoilTemperatureImperial: ºF; Metric: ºCMaximum surface temperature (0 cm deep), which can be water or land.
soilMoisturem³/m³Average soil water content as volumetric mixing ratio at 0-1, 1-3, 3-9, 9-27 and 27-81 cm depths.
sunriseiso8601Sunrise time.
sunsetiso8601Sunset time.
maxWindspeedImperial: mph, Metric: km/hMaximum wind speed on a day.
maxWindgustsImperial: mph, Metric: km/hMaximum wind gusts on a day.
windDirectionºDominant wind direction.
evapotranspirationImperial: inch, Metric: mmDaily sum of ET₀ Reference Evapotranspiration of a well watered grass field.
rainSumImperial: inch, Metric: mmSum of daily rain.
snowfallSumImperial: inch, Metric: cmSum of daily snowfall.
precipitationSumImperial: inch, Metric: mmSum of daily precipitation (including rain, showers and snowfall).
dewpointImperial: ºF, Metric: ºCDew point temperature at 2 meters above ground.
longwaveRadiationW/m²Longwave radiation refers to thermal or infrared radiation emitted by the Earth back into space.
shortwaveRadiationW/m²Shortwave radiation is often quantified as solar irradiation incident on the Earth's atmosphere or surface.
cloudcover%Total cloud cover as an area fraction.
relativeHumidity%Relative humidity at 2 meters above ground.
tip

Sunrise and sunset variables are only available for daily forecast. Dew point, longwave radiation, shortwave radiation, cloud cover, soil moisture and relative humidity are only available for hourly forecast. The other variables have their corresponding values in both hourly and daily.

Historical Data

Leaf's historical weather service provides access to data from 1940 onwards when available. The data can be fetched daily or hourly. Please note, historical weather data from less than 5 days ago is unavailable. If you’re wanting historical weather data within the last 5 days, you can use the forecast service to get this information.

Properties

  • Cloud cover
  • Dew-point (2 m)
  • Evapotranspiration
  • Precipitation
  • Rain
  • Relative Humidity (2 m)
  • Short Wave Radiation
  • Long Wave Radiation
  • Snowfall
  • Sunrise
  • Sunset
  • Temperature (2 m)
  • Soil Temperature (0 - 7 cm)
  • Soil Moisture (0-7 cm; 7-28 cm; 28-100 cm; 100-255 cm)
  • Wind Direction (10 m)
  • Wind Gusts (10 m)
  • Wind Speed (10 m)

Data sources

Reanalysis ModelRegionSpatial ResolutionTemporal ResolutionData AvailabilityUpdate Frequency
ERA5Global0.25° (~25 km)Hourly1940 to presentDaily with 5 days delay
ERA5-LandGlobal0.1° (~11 km)Hourly1950 to presentDaily with 5 days delay

Availability by Weather Model

PropertyUnit of measurementDescription
meanTemperatureImperial: ºF; Metric: ºCMean daily air temperature at 2 meters above ground.
minTemperatureImperial: ºF; Metric: ºCMinimum daily air temperature at 2 meters above ground.
maxTemperatureImperial: ºF; Metric: ºCMaximum daily air temperature at 2 meters above ground.
meanSoilTemperatureImperial: ºF; Metric: ºCMean surface temperature (0 cm deep), which can be water or land.
minSoilTemperatureImperial: ºF; Metric: ºCMinimum surface temperature (0 cm deep), which can be water or land.
maxSoilTemperatureImperial: ºF; Metric: ºCMaximum surface temperature (0 cm deep), which can be water or land.
soilMoisturem³/m³Average soil water content as volumetric mixing ratio at 0-7, 7-28, 28-100 and 100-255 cm depths.
sunriseiso8601Sunrise time.
sunsetiso8601Sunset time.
maxWindspeedImperial: mph, Metric: km/hMaximum wind speed on a day.
maxWindgustsImperial: mph, Metric: km/hMaximum wind gusts on a day.
windDirectionºDominant wind direction.
evapotranspirationImperial: inch, Metric: mmDaily sum of ET₀ Reference Evapotranspiration of a well watered grass field.
rainSumImperial: inch, Metric: mmSum of daily rain.
snowfallSumImperial: inch, Metric: cmSum of daily snowfall.
precipitationSumImperial: inch, Metric: mmSum of daily precipitation (including rain, showers and snowfall).
dewpointImperial: ºF, Metric: ºCDew point temperature at 2 meters above ground.
longwaveRadiationW/m²Longwave radiation refers to thermal or infrared radiation emitted by the Earth back into space.
shortwaveRadiationW/m²Shortwave radiation is often quantified as solar irradiation incident on the Earth's atmosphere or surface.
cloudcover%Total cloud cover as an area fraction.
relativeHumidity%Relative humidity at 2 meters above ground.
tip

Sunrise and sunset variables are only available for daily forecast. Dew point, longwave radiation, shortwave radiation, cloud cover, soil moisture and relative humidity are only available for hourly historical. The other variables have their corresponding values in both hourly and daily.