# Microsoft Aurora

Microsoft's AI-based global weather model that provides forecasts at 0.25° resolution.

## Live Forecast Data

* Global coverage at 0.25° resolution (721x1440 grid)
* Four daily runs (00, 06, 12, 18 UTC)
* 20-day prediction horizon (480h, six-hourly)
* Real-time data access via [Python SDK](https://docs.jua.ai/python-sdk/weather/forecast) or [REST API](https://docs.jua.ai/api-v2/getting-started)

## Technical Specifications

### Available Weather Parameters

Aurora uses standardized variable naming conventions. For full details on the naming structure, see [Weather Variable Naming](https://docs.jua.ai/python-sdk/weather/naming).

| Parameter Code | API Name                                   | Description                      | Units        |
| -------------- | ------------------------------------------ | -------------------------------- | ------------ |
| 2t             | air\_temperature\_at\_height\_level\_2m    | Air temperature at 2m            | Kelvin       |
| 10si           | wind\_speed\_at\_height\_level\_10m        | Horizontal wind speed at 10m     | m s⁻¹        |
| 10wdir         | wind\_direction\_at\_height\_level\_10m    | Horizontal wind direction at 10m | Degrees true |
| msl            | air\_pressure\_at\_mean\_sea\_level        | Mean Sea-level Pressure          | Pa           |
| z\_500         | geopotential\_at\_pressure\_level\_50000Pa | Geopotential                     | m² s⁻²       |

Note: The previous naming convention used in EPT-1.5 is deprecated. All new integrations should use the standardized naming shown above.

## Hindcast Data

**Spatial Extent:** Global, on a grid of 721x1440 (25 km resolution).

**Data Access:** Hindcasts are available via [API](https://docs.jua.ai/api-v2/getting-started) or [SDK](https://docs.jua.ai/python-sdk/getting-started). For bulk, grid-based access, please contact <support@jua.ai>.

| **Model**       | **Temporal Extent**                                   | **Forecast Horizon and Resolution** |
| --------------- | ----------------------------------------------------- | ----------------------------------- |
| Aurora 0.25 deg | <p>2025-06-03 - today</p><p>at 00, 06, 12, 18 UTC</p> | 480h, six-hourly                    |

### Extended Hindcast Data (Special Request Only)

{% hint style="warning" %}
**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.
{% endhint %}

| **Model**       | **Extended Temporal Coverage**                                                 | **Forecast Horizon and Resolution** |
| --------------- | ------------------------------------------------------------------------------ | ----------------------------------- |
| Aurora 0.25 deg | <p>2023-01-02 - 2024-12-27, 2025-06-03 - today</p><p>at 00, 06, 12, 18 UTC</p> | 480h, six-hourly                    |