---
title: "Future Monthly Preview"
method: GET
path: "/api/future/monthly-preview"
tags: ["Stations and data"]
---

# Future Monthly Preview

`GET /api/future/monthly-preview`

## Request

- Base URL: `https://epw.tools`
- URL: `https://epw.tools/api/future/monthly-preview`
- Auth: none declared

Return monthly climate deltas (tas, hurs, rsds, pr) for all 12 months
without generating a full EPW file.  Used by the frontend preview chart.
Runs in a thread executor so it doesn't block the event loop during
potential THREDDS I/O (usually served from cache).

## Query parameters

- `lat` number, required
- `lon` number, required
- `scenario` string
- `horizon` integer
- `model` string

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/epw/apis/epw-tools-api.md) · [All operations](https://skmtc.dev/epw/apis/epw-tools-api/llms.txt) · [OpenAPI document](https://skmtc.dev/epw/apis/epw-tools-api/revisions/e6b60fc7a6d7?raw)