# Weather and climate data APIs for AI agents (slim)

> 9 weather & climate data listings ranked by the Anchor benchmark. Leader Google Weather API (Maps Platform) (B). APIs for current weather, forecasts, historical data and alerts, by coordinates. Compared on forecast range, historical depth, how often data updates, the terms of use and price per thousand calls.

- Full: https://www.anchorterminal.com/categories/weather.md (~3,350 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/categories/weather.json · canonical https://www.anchorterminal.com/categories/weather
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

- Tools: 9 · agent-ready (BB+): 0 · accept x402: 0 · JSON: https://www.anchorterminal.com/api/v1/tools.json · by capability: https://www.anchorterminal.com/api/v1/capabilities.json
- Capabilities: weather.current, weather.forecast, weather.historical, weather.alerts, weather.marine

| # | Tool | Grade | Score | Confidence | x402 | Auth | Where | Slim |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 151 | Google Weather API (Maps Platform) | B | 67 | high | no | API key | hosted | https://www.anchorterminal.com/tools/google-weather-api.min.md |
| 162 | Pirate Weather | B | 66.2 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/pirate-weather.min.md |
| 169 | WeatherAPI.com | B | 65.8 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/weatherapi-com.min.md |
| 203 | Open-Meteo | B | 63.5 | medium | no | None | hosted | https://www.anchorterminal.com/tools/open-meteo.min.md |
| 251 | Visual Crossing Weather API | C | 60.3 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/visual-crossing.min.md |
| 294 | OpenWeather One Call API | C | 57.4 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/openweather-one-call.min.md |
| 364 | NOAA National Weather Service API (api.weather.gov) | D | 49.9 | medium | no | None | hosted | https://www.anchorterminal.com/tools/nws-api.min.md |
| 372 | AccuWeather Core Weather API + MCP | D | 48.8 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/accuweather-api.min.md |
| 399 | Met Office Weather DataHub (Site Specific) | E | 45.5 | medium | no | API key | hosted | https://www.anchorterminal.com/tools/met-office-datahub.min.md |