EPT-1.5 Family
EPT-1.5 and EPT-1.5 Early are our core product offerings. EPT-1.5 provides the highest accuracy and hindcast coverage, while EPT-1.5 Early offers dissemination 2.5 hours earlier to anticipate market movements.
Live Forecast Data
Global coverage at 0.081°x0.081° (approx. 9x9km) resolution
Four daily runs (00, 06, 12, 18 UTC)
20-day prediction horizon
Real-time data access via Python SDK or REST API
Technical Specifications
Available Weather Parameters
2t
air_temperature_at_height_level_2m
Air temperature at 2m
Kelvin
10si
wind_speed_at_height_level_10m
Wind speed at 10m
m s⁻¹
10wdir
wind_direction_at_height_level_10m
Wind direction at 10m
Degrees true
100si
wind_speed_at_height_level_100m
Wind speed at 100m
m s⁻¹
100wdir
wind_direction_at_height_level_100m
Wind direction at 100m
Degrees true
msl
air_pressure_at_mean_sea_level
Mean sea-level pressure
Pa
ssrd
surface_downwelling_shortwave_flux_sum_1h
Surface solar downward irradiance
J m⁻²
z_500
geopotential_at_pressure_level_50000Pa
Geopotential at 500hPa
m² s⁻²
Note that wind direction is expressed as the direction in which the wind is blowing from as measured clockwise from true North. For example, wind blowing from the South East would have a 10wdir value of 135.0.
The legacy parameter naming convention used in EPT-1.5 is deprecated. All new integrations should use the standardized naming shown above. See Weather Variable Naming for full details.
For most forecast parameters (non-accumulated), the value at a given timestamp (e.g., 13:00) represents the weather conditions exactly at that time. The only exception is SSRD, which reflects the total solar radiation from 12:01 to 13:00 rather than just the conditions at 13:00 — making it an accumulated parameter.
Hindcast Data
Spatial Extent: Global, on a grid of 2220x4440 (9 km resolution).
Data Access: Hindcasts are accessible via our Python SDK and API. For bulk, grid-based access, please contact support@jua.ai.
Model
Temporal Extent
Forecast Horizon and Resolution
EPT-1.5
2025-01-06 - today
at 00, 06, 12, 18 UTC
480h
- From 1h to 240h: hourly
- From 240h to 480h: six-hourly
EPT-1.5 Early
2025-08-12 - today at 00, 06, 12, 18 UTC
480h
- From 1h to 240h: hourly
- From 240h to 480h: six-hourly
Extended Hindcast Data (Special Request Only)
Special Request Required: The following extended hindcast data is available but requires special access permissions and is not accessible through standard API/SDK access. Please contact support@jua.ai to request access.
Model
Spatial Extent
Extended Temporal Coverage
Forecast Horizon and Resolution
EPT-1.5
Global
2024-10-16 - today at 00, 06, 12, 18 UTC
480h
- From 1h to 240h: hourly
- From 240h to 480h: six-hourly
EPT-1.5
Europe (36°-72°N, -15°-35°E)
2022-01-01 - 2024-07-31 at 00 UTC
360h, hourly
EPT-1.5
North America (Various)
2022-01-01 - 2024-07-31 at 00 UTC
360h, hourly
EPT-1.5 Early
Global
2025-01-01 - today at 00, 06, 12, 18 UTC
480h
- From 1h to 240h: hourly
- From 240h to 480h: six-hourly
EPT-1.5 Early
Global
2025-01-01 - today at 00, 06, 12, 18 UTC
480h
- From 1h to 240h: hourly
- From 240h to 480h: six-hourly
EPT-1.5 Early
Europe (36°-72°N, -15°-35°E)
2024-01-01 - 2024-12-31 at 00 UTC
360h, hourly
Dissemination Times
For detailed dissemination times of EPT-1.5 and EPT-1.5 Early, please refer to the Dissemination Times page.
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