# NOAA National Weather Service API (api.weather.gov) vs OpenWeather One Call API (slim)

> OpenWeather One Call API has a score of 57.4 (C) against NOAA National Weather Service API (api.weather.gov)'s 49.9 (D). Both do weather current. The largest gap is maintenance & community, 52 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/nws-api-vs-openweather-one-call.md (~1,700 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/nws-api-vs-openweather-one-call.json · canonical https://www.anchorterminal.com/compare/nws-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 NOAA National Weather Service API (api.weather.gov)'s 49.9 (D). Both do weather current. The largest gap is maintenance & community, 52 points.

- NOAA National Weather Service API (api.weather.gov): D 49.9, rank #364 of 452 · https://www.anchorterminal.com/tools/nws-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 NOAA National Weather Service API (api.weather.gov) for security & auth (+11), transparency & trust (+5). Pick OpenWeather One Call API for reliability (+20), agent ergonomics (+7), maintenance & community (+52).

| Category | NOAA National Weather Service API (api.weather.gov) | OpenWeather One Call API |
| --- | --- | --- |
| Reliability (16%) | 25 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 67 | 68 |
| Agent ergonomics (13%) | 66 | 73 |
| Security & auth (14%) | 53 | 42 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 8 | 60 |
| Transparency & trust (7%) | 67 | 62 |