/v2/weather.grib

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/v2/weather.grib

Global area weather data in GRIB format.

Item	Value
Format	GRIB
Region	Global
Forecast Base Time	00:00, 06:00, 12:00, 18:00 UTC
Data Update Time	See element-by-element table below

Data Elements

No	Item Code	Item Name	Unit
1	ssp	Sea Surface Pressure	Pa
2	uuu	Wind U Component	m/s
3	vvv	Wind V Component	m/s
4	uuu1000hpa	Wind U Component (1000 hPa)	m/s
5	vvv1000hpa	Wind V Component (1000 hPa)	m/s
6	uuu500hpa	Wind U Component (500 hPa)	m/s
7	vvv500hpa	Wind V Component (500 hPa)	m/s
8	rh850hpa	Relative Humidity (850 hPa)	%
9	rh700hpa	Relative Humidity (700 hPa)	%
10	ph1000hpa	Surface Pressure Altitude (1000 hPa)	gpm
11	ph500hpa	Surface Pressure Altitude (500 hPa)	gpm
12	tmp1000hpa	Temperature (1000 hPa)	Kelvin
13	tmp850hpa	Temperature (850 hPa)	Kelvin
14	intpcp	Column-integrated precipitation in 6 hours	kg/m²
15	vis	Visibility	m

Data Availability (approximate latency after forecast base time)

Elements	Availability
ssp, uuu, vvv (1–3)	+~9 h 30 min
uuu1000hpa, vvv1000hpa, uuu500hpa, vvv500hpa, rh850hpa, rh700hpa, ph1000hpa, ph500hpa, tmp1000hpa, tmp850hpa, intpcp (4–14 excl. vis)	+~8 h
vis (15)	+~6 h

Grid Specifications

Elements	Forecast Duration	Time Pitch	Timesteps	Latitude	Longitude	Resolution	Grid Size
1–3 (ssp, uuu, vvv)	384 h	6 h	t000–t384	−90.0 to 90.0	0.0 to 359.0	1.0°	360 × 181
4–14 (pressure level / humidity / temp / precip)	354 h	6 h	t000–t354 ¹	−90.0 to 90.0	0.0 to 359.0	1.0°	360 × 181
15 (vis) t000–t192	384 h	12 h	t000–t192	−89.844 to 89.844 (Δ0.204423°)	0.0 to 359.796 (Δ0.204545°)	0.204°	1760 × 880
15 (vis) t204–t384	384 h	12 h	t204–t384	−89.522 to 89.522 (Δ0.623846°)	0.0 to 359.375 (Δ0.625°)	0.625°	576 × 288

¹ intpcp (No. 14) does not have t000.

Past Data

For past base times, only the analysis data at the initial timestep (t000) is retained.
Forecast timesteps (t006, t012, etc.) are deleted once they become historical.
To retrieve past conditions, specify timestep=000 along with the target base time date.

Parameters

Header Parameters

Authorization*

"WniWebApi " + Token ID

Typestring

Required

Query Parameters

element*

Element code to retrieve (Required).
One of: ssp, uuu, vvv, uuu1000hpa, vvv1000hpa, uuu500hpa, vvv500hpa,
rh850hpa, rh700hpa, ph1000hpa, ph500hpa, tmp1000hpa, tmp850hpa,
intpcp, vis

Typestring

Required

Enum

sspuuuvvvuuu1000hpavvv1000hpauuu500hpavvv500hparh850hparh700hpaph1000hpaph500hpatmp1000hpatmp850hpaintpcpvis

date

Forecast base time (Optional).
Format: yyyymmddhh — "hh" must be 00, 06, 12, or 18.
If omitted, returns the latest available data.

Typestring

Example2024010100

pattern^[0-9]{10}$

timestep

Forecast timestep (Optional).
3-digit zero-padded number, 000 to 384 (e.g. 006 = +6 h forecast).
If omitted, defaults to 000.
Valid range depends on the element — see Grid Specifications above.

Typestring

Example000

pattern^[0-9]{3}$

Responses

Successful response — GRIB file containing the requested data.

GET

/v2/weather.grib

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Headers

Authorization*

Variables

Key

Value

element*

date

timestep

Samples