---
title: "CME-city degree-day settle-index tracker: month-to-date HDD/CAT + probabilistic final-index projection"
method: GET
path: "/v1/degree-days/{city}"
---

# CME-city degree-day settle-index tracker: month-to-date HDD/CAT + probabilistic final-index projection

`GET /v1/degree-days/{city}`

## Request

- Base URL: `https://voltcast.com/api`
- URL: `https://voltcast.com/api/v1/degree-days/{city}`
- Auth: HTTP bearer

## Path parameters

- `city` string, required

## Query parameters

- `contract` string
- `months` integer

## Response `200`

Scale. Cities: amsterdam, essen (disclosed Düsseldorf proxy), london, paris. European CME convention: daily avg = (Tmax+Tmin)/2, HDD base 18°C, CAT = sum of daily averages. Indicative tracking, not official settlement data.

---

[API](https://skmtc.dev/voltcast/apis/voltcast-api.md) · [All operations](https://skmtc.dev/voltcast/apis/voltcast-api/llms.txt) · [OpenAPI document](https://skmtc.dev/voltcast/apis/voltcast-api/revisions/9c39e52e3eed?raw)