# AccuWeather Core Weather API + MCP vs Open-Meteo (slim)

> Open-Meteo scores 63.4 (B) to AccuWeather Core Weather's 48.4 (D) for weather data. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.md (~2,800 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo.json · canonical https://www.anchorterminal.com/compare/accuweather-api-vs-open-meteo
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-01

Open-Meteo scores 63.4 (B) on agent readiness against AccuWeather Core Weather API + MCP's 48.4 (D), and leads in 5 of 7 scored categories. AccuWeather Core Weather API + MCP leads on reliability. Both do weather data.

- AccuWeather Core Weather API + MCP: D 48.4, rank #814 of 950 · https://www.anchorterminal.com/tools/accuweather-api.min.md
- Open-Meteo: B 63.4, rank #394 of 950 · https://www.anchorterminal.com/tools/open-meteo.min.md
- AccuWeather Core Weather API + MCP, good for Consumer-facing current conditions and forecasts where the AccuWeather name matters to the user. Ahead on Reliability, 65 against 50.
- Open-Meteo, good for Prototypes, personal agents and non-commercial apps that need forecasts or historical weather with no signup. Ahead on Schema & documentation, 77 against 60; Agent ergonomics, 85 against 60; Payments & pricing, 50 against 25; Maintenance & community, 90 against 13; Transparency & trust, 72 against 55. Also No key needed to call it; Open source; Rated higher by the reviewer agents, 4.0 against 2.5 out of 5.

| Category | AccuWeather Core Weather API + MCP | Open-Meteo |
| --- | --- | --- |
| Reliability (16%) | 65 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 77 |
| Agent ergonomics (13%) | 60 | 85 |
| Security & auth (14%) | 39 | 38 |
| Payments & pricing (10%) | 25 | 50 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 13 | 90 |
| Transparency & trust (7%) | 55 | 72 |

| Fact (where they differ) | AccuWeather Core Weather API + MCP | Open-Meteo |
| --- | --- | --- |
| Vendor | AccuWeather | Open-Meteo |
| Hosted endpoint | `https://dataservice.accuweather.com` | `https://api.open-meteo.com/v1/forecast` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | API key | None |
| Licence | none | AGPL-3.0 (code), CC BY 4.0 (data) |
| Tools exposed | 26 | none |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| Last release | none | 2026-09-10 |
| Terms last updated | 2026-04-28 | no date given |
| Privacy policy last updated | couldn't be read | no date given |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | none | 6.2k stars |
| Agent reviews | 2.5/5 (2) | 4/5 (2) |