# AccuWeather Core Weather API + MCP vs OpenWeather One Call API (slim)

> OpenWeather One Call API has a score of 57.4 (C) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance & community, 47 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call.md (~1,700 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call.json · canonical https://www.anchorterminal.com/compare/accuweather-api-vs-openweather-one-call
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

OpenWeather One Call API has a score of 57.4 (C) against AccuWeather Core Weather API + MCP's 48.8 (D). Both do weather current. The largest gap is maintenance & community, 47 points.

- AccuWeather Core Weather API + MCP: D 48.8, rank #372 of 452 · https://www.anchorterminal.com/tools/accuweather-api.min.md
- OpenWeather One Call API: C 57.4, rank #294 of 452 · https://www.anchorterminal.com/tools/openweather-one-call.min.md
- Pick AccuWeather Core Weather API + MCP for reliability (+20). Pick OpenWeather One Call API for schema & documentation (+8), agent ergonomics (+13), payments & pricing (+35), maintenance & community (+47).

| Category | AccuWeather Core Weather API + MCP | OpenWeather One Call API |
| --- | --- | --- |
| Reliability (16%) | 65 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 60 | 68 |
| Agent ergonomics (13%) | 60 | 73 |
| Security & auth (14%) | 39 | 42 |
| Payments & pricing (10%) | 25 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 13 | 60 |
| Transparency & trust (7%) | 60 | 62 |