Pirate Weather
Open-source weather API – drop-in replacement for Dark Sky, offering NOAA forecast data in JSON format.
| What is it | Open-source weather API – drop-in replacement for Dark Sky, offering NOAA forecast data in JSON format. |
|---|---|
| Pricing | Unknown |
| Platform | API |
| API | Yes |
| Works with | n8n |
| Best for | replacing Dark Sky API in existing apps and integrations, building custom weather dashboards and widgets |
| Domain registered | 2021 |
Data updated Aug. 1, 2026
What does Pirate Weather do?
Pirate Weather is a weather API that pulls data from government models like GFS, HRRR, and NBM and serves it in a clean JSON format. Its main trick: it follows the same API structure as the now-defunct Dark Sky API, so you can point old apps (like Home Assistant integrations or Magic Mirror widgets) at this new endpoint and they'll just work. No rewriting code, no hunting for a replacement. The data is the raw model output — no secret sauce, just transparent numbers you can trace back to NOAA.
What I appreciate is the honesty. The creator, Alexander Rey, built this because he wanted to see exactly how his weather forecasts were generated. Every processing step is documented in a blog, and the entire codebase is open source on GitHub. The API is hosted on AWS, so it scales well, and there's a free tier that gives you 10,000 calls per month. If you need more, a $2 monthly donation doubles that limit. Recent updates added an MCP server for AI agents and a flag to include AI model predictions, but the core is still straightforward weather data. You can get current conditions, hourly forecasts, daily outlooks, alerts, and even historical data going back 7 days.
Who is this for? Primarily developers who relied on the old Dark Sky API and need a quick swap-in. But also anyone who likes their weather data unfiltered — smart home tinkerers, weather hobbyists, or researchers who want to feed raw forecast data into their own projects. The included Python libraries and multiple integration repos make it easy to get started.
Key features
What makes it stand outWho is Pirate Weather for?
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