influxdata/telegraf

[inputs.openweathermap] Error in plugin: wrong/changed API endpoint for fetch type weather

Open

#18077 opened on Dec 2, 2025

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bughelp wantedsize/m

Description

Relevant telegraf.conf

[[inputs.openweathermap]]
  ## OpenWeatherMap API key.
  app_id = "..."

  ## City ID's to collect weather data from.
  city_id = ["..."]

  # lang = "en"

  ## APIs to fetch; can contain "weather" or "forecast".
  fetch = ["weather"]

Logs from Telegraf

[inputs.openweathermap] Error in plugin: querying "https://api.openweathermap.org/data/2.5/group?APPID=...&id=...&lang=en&units=metric" failed: https://api.openweathermap.org/data/2.5/group?APPID=...&id=...&lang=en&units=metric returned HTTP status 401 Unauthorized

System info

Docker Container Telegraf 1.36.4

Docker

No response

Steps to reproduce

Try https://openweathermap.org/current They probably changed the API on August 29, 2025.

Expected behavior

Valid request

Actual behavior

File openweathermap.go line 220 should be weather instead of group

Additional info

No response

Contributor guide

Tech stack
gorest api
Domain
backendapi
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic Gounderstanding of HTTP APIs
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80
Research direction
The issue is in the openweathermap.go file, specifically line 220 where the URL path uses 'group' but should use 'weather' based on the OpenWeatherMap API change on August 29, 2025. First, verify the current API documentation for the 'group' vs 'weather' endpoint. Then, check if there are any other references to this URL in the codebase. The fix involves changing the path segment from 'group' to 'weather' and testing against the actual API.