chubin/wttr.in
This system is a weather information service that retrieves, processes, and renders meteorological data for various locations. It supports multiple output formats including terminal text, HTML, PNG images, and Prometheus metrics, with extensive localization and colorization capabilities. The architecture features a modular Go backend with caching, geolocation, and upstream data fetching, all managed through centralized configuration and robust logging.
63.4
Adequate · 1 August 2026
10k
lines of production code
Go
primary language
1
bus factor · 248 authors in all
3
measurements over time
How it got here
2015–2022 · Go rewrite and infrastructure modernization
The project underwent a complete rewrite in Go, introducing a new build system, Docker containerization, and centralized YAML configuration. This period also established robust infrastructure for deployment, logging, and testing, while enhancing location aliasing and terminal rendering.
12 changes
2024–2026 · internal architecture and rendering overhaul
This period focused on a comprehensive internal refactoring, introducing a modular pipeline for weather processing, caching, and location resolution. The team significantly expanded output capabilities by adding new renderers for HTML, PNG, and JSON, alongside deep localization and internationalization support. Infrastructure improvements included systemd integration, SNI support, and utility scripts for monitoring and configuration.
27 changes
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About this page
- The description of this project is derived from its own commit history, not from its README.
- The score is its highest published measurement, taken on 1 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
- Measured at commit 73eddff818 — the exact code this score is about.
- Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.