{"id":"open-meteo-api","name":"Open-Meteo API","homepage":"https://open-meteo.com/en/docs","repo_url":"https://github.com/open-meteo/open-meteo","category":"data-intelligence","subcategories":["weather","open-data"],"tags":["open-meteo","weather","forecast","free","no-api-key","open-source","rest-api"],"what_it_does":"Free, open-source weather API with no API key required, providing hourly and daily forecasts, historical data, and marine/air quality data from multiple numerical weather prediction models.","use_cases":["Fetching weather forecasts in agent workflows without API key management","Historical weather data retrieval for analytics and backtesting","Climate reanalysis data for research and modeling","Marine and ocean weather for maritime applications","Multi-model ensemble weather data for improved accuracy"],"not_for":["Commercial use at scale without commercial license","Sub-hourly minute-level resolution data","Real-time severe weather alerts"],"best_when":"You want the simplest possible weather integration for agents with no signup, no API key, and no cost for non-commercial use.","avoid_when":"You need commercial SLA guarantees, real-time alerts, or are building a commercial product without licensing.","alternatives":["openweathermap-api","weatherapi"],"af_score":84.4,"security_score":null,"reliability_score":null,"package_type":"mcp_server","discovery_source":["github"],"priority":"low","status":"evaluated","version_evaluated":"current","last_evaluated":"2026-03-01T09:50:06.027143+00:00","performance":{"latency_p50_ms":80,"latency_p99_ms":350,"uptime_sla_percent":99.0,"rate_limits":"No hard limit; fair use ~10,000 requests/day recommended","data_source":"llm_estimated","measured_on":null}}