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Historical

Data fields for the historical weather API:

FieldValues (Metric, Imperial)Availability
temperature

The "real" temperature measurement (at 2m)		Celsius [-90,60]
Fahrenheit		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e temperatureMax
P: -
dewPoint

The temperature to which air must be cooled to become saturated with water vapor (at 2m)		Celsius [0,100]
Fahrenheit		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e dewPointMax
P: -
humidity

The concentration of water vapor present in the air		%F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e humidityMax
P: -
windSpeed

The fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature at 10m		m/s
mph		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e windSpeedMax
P: -
windSpeed100

The fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature at 100m		m/s
mph		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e windSpeed100Max
P: -
windDirection

The direction from which it originates, measured in degrees clockwise from due north at 10m		degrees or nullF: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Avg. i.e windDirectionAvg
P: -
windDirection100

The direction from which it originates, measured in degrees clockwise from due north at 100m		degrees or nullF: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Avg. i.e windDirection100Avg
P: -
windGust

The maximum brief increase in the speed of the wind, usually less than 20 seconds (at 10m)		m/s
mph		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e windGustMax
P:-
pressureSurfaceLevel

The force exerted against a surface by the weight of the air above the surface (at the surface level)		hPa
inHg		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e pressureSurfaceLevelMax
P: -
totalPrecipitationAccumulation

The total amount of precipitation that has occurred within a given timeframe.

This field will be deprecated. Use precipitationAccumulation instead. For daily sum, use precipitationAccumulationSum		mm
in		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e totalPrecipitationAccumulationMax
P: -
precipitationAccumulation

The amount of precipitation accumulated every hour within a given timeframe.		mm
in		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Sum, Max, Min, Avg, P95, P50, P5. i.e precipitationAccumulationSum
P: -
et0

ET0 (evapotranspiration)
The amount of water extracted from the different soil layers.		mm
in		F: January 1st 2000 till -90 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e et0Max
P: -
snowAccumulation

The 'liquid water equivalent' of accumulated amount of new snowfall that has occurred over the last hour of the requested time

Will always return hourly data and does not aggregate - eg. if you request snowAccumulationMax over a daily timestep, the max hourly value of that day will be returned, not the accumulation for the whole day.		mm of LWE
in of LWE		F: January 1st 2000 till -7 days.
I: H
A: East Africa Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e snowAccumulationMax
P: -
potentialEvaporation

An indication of the maximum possible evaporation		mm
in		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Sum, Max, Min, Avg, P95, P50, P5. i.e potentialEvaporationMax
P:-
evaporationFromVegetationTranspiration

The amount of evaporation from vegetation transpiration

Will be deprecated. Use evaporationVegetationTranspiration instead. For daily sum, use evaporationVegetationTranspirationSum		mm
in		F: January 1st 2000 till -90 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e `evaporationFromVegetationTranspirationMax
P: -
evaporationVegetationTranspiration

The amount of evaporation from vegetation transpiration		mm
in		F: January 1st 2000 till -90 days.
I: H
A: WW Land
Aggregations: Sum, Max, Min, Avg, P95, P50, P5. i.e evaporationVegetationTranspiration
P: -
snowAccumulationLwe

The 'liquid water equivalent' of accumulated amount of new snowfall that has occurred over the last hour of the requested time		mm of LWE
in of LWE		F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e snowAccumulationLweMax
P: -
cloudCover

Cloud cover represents the percentage of total cloud cover present occurring at all levels throughout the atmosphere for the reanalysis grid box of which a location/or locations reside.		%F: January 1st 2000 till -7 days.
I: H
A: WW Land
Aggregations: Max, Min, Avg, P95, P50, P5. i.e cloudCoverMax
P: -
solarGHI

The total amount of shortwave radiation received from above by a surface horizontal to the ground.		W/m^2
Btu/ft2		F: January 1st 2000 till -7 days.
I: H
A: WW
Aggregations: Max, Min, Avg
P: -
solarDNI

The diffuse (i.e., scattered) component of GHI reaching the surface of the earth at each point		W/m^2
Btu/ft2		F: January 1st 2000 till -7 days.
I: H
A: WW
Aggregations: Max, Min, Avg
P: -
solarDHI

The direct component of GHI reaching the surface of the earth at each point		W/m^2
Btu/ft2		F: January 1st 2000 till -7 days.
I: H
A: WW
Aggregations: Max, Min, Avg
P: -

Calculated daily fields:

FieldValues (Metric, Imperial)Availability
sunriseTime

The daily appearance of the Sun on the horizon due to Earth's rotation		UTC ISO-8601F: January 1st 2000 till -7 days.
I: H
A: WW Land
P: -
sunsetTime

The daily disappearance of the Sun below the horizon due to Earth's rotation		UTC ISO-8601F: January 1st 2000 till -7 days.
I: H
A: WW Land
P: -
moonPhase

The shape of the directly sunlit portion of the Moon as viewed from Earth		0: New (0.0625-0.9375)
1: Waxing Crescent (0.0625-0.1875)
2: First Quarter (0.1875-0.3125)
3: Waxing Gibbous (0.3125-0.4375)
4: Full (0.4375-0.5625)
5: Waning Gibbous (0.5625-0.6875)
6: Third Quarter (0.6875-0.8125)
7: Waning Crescent (0.8125-0.9375)		F: January 1st 2000 till -7 days.
I: H
A: WW Land
P: -