Open-Meteo API
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.
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.
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
Alternatives
Full Evaluation Report
Comprehensive deep-dive: security analysis, reliability audit, agent experience review, cost modeling, competitive positioning, and improvement roadmap for Open-Meteo API.
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Package Brief
Quick verdict, integration guide, cost projections, gotchas with workarounds, and alternatives comparison.
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Score Monitoring
Get alerted when this package's AF, security, or reliability scores change significantly. Stay ahead of regressions.
Continuous monitoring
Scores are editorial opinions as of 2026-03-01.