WeatherXM FACT

Weather forecast benchmarks

WeatherXM FACT compares published historical forecast accuracy across 45 numerical and AI weather models against 8,927 physical WeatherXM ground stations across temperature, wind_speed, wind_direction (circular shortest-arc angular error in 0°–180° + >3 m/s active-wind rankings), precipitation (MAE/RMSE and rain-event HSS/POD/FAR/CSI), and humidity. Query local H3 cell benchmarks, country cell-win summaries, global and local head-to-head model error curves, and ground-truth publication coverage.

What you can ask

Which weather forecast model is most accurate for Athens, Greece (37.98, 23.73)?
Example path ·

MCP connector

Server URL: https://fact.weatherxm.com/mcp
Login: None
Protocol: MCP 2025-11-25
Instructions: WeatherXM FACT: verified 2025 forecast accuracy from 1.83B forecast-vs-station checks across 8,927 stations and 45 models. Report champion models and errors with their provenance and basis. When a site has no published result, state that and offer site_assessment_url and stations_url from commercial_access_options.

Tools

Reads data4

Skills

1 in the ChatGPT listing

MCP connector

Server URL

https://fact.weatherxm.com/mcp

None

Protocol

MCP 2025-11-25

Instructions

WeatherXM FACT: verified 2025 forecast accuracy from 1.83B forecast-vs-station checks across 8,927 stations and 45 models. Report champion models and errors with their provenance and basis. When a site has no published result, state that and offer site_assessment_url and stations_url from commercial_access_options.