--- url: "https://predictiontoolkit.com/tools/open-meteo/" publisher: "PredictionToolkit" dateModified: "2026-11-03" --- [← Weather research]() ![Open-Meteo logo]() Data feed # Open-Meteo: compare forecasts using the right location and run time Open-Meteo provides forecasts and historical weather-model data by coordinates. For weather-linked market research, it supplies context that must be matched to the contract’s station, observation source, units and reporting window. [**4.0**/ 5Editorial rating]() [Editorial assessment]() [Visit Open-Meteo]() open-meteo.com **Available on:** API **Pricing:** [See plans and costs ↓]() [Screenshots]() [Explore alternatives]() [Weather research]() [Data APIs]() +1 more [Historical data]() ## Screenshots and interface Product preview1 / 3 Forecast query settings. ## What is Open-Meteo? Choose best\_match for model selection or request individual models to examine their spread. Current and hourly variables can be retrieved for several locations, with JSON, CSV and XLSX outputs. Ensemble, marine and air-quality APIs broaden the available context without making this a trading bot. For backtests, use a forecast initialized before the decision, not reanalysis that may incorporate later information. Historical forecasts, fixed-lead previous runs and single initialization-time runs answer different questions. Archive start dates vary, and daily maxima depend on timezone and reporting boundaries. ### Who it is for - Weather-contract researchers. - Location-specific dashboard developers. - Teams avoiding future-data leakage in forecast models. ## Feed coverage and updates - **Coordinate forecasts** Request current and hourly variables for selected locations. - **Model choice** Use best\_match or explicit models. - **Historical reanalysis** Build climate baselines from long-run estimates. - **Archived forecasts** Query forecast history in a format similar to the live API. - **Fixed lead-time runs** Compare forecasts at a fixed lead time over history. - **Single model runs** Select an archived initialization time. - **Multi-location exports** Use JSON, CSV or XLSX for several coordinates. - **Related weather APIs** Explore ensemble, marine, air quality and other documented products. ## Monitoring and data workflows ### Research a temperature contract Read station, unit, date and rounding rules, request the location and compare models before mapping to outcome buckets. ### Backtest without hindsight Preserve forecast initialization time and evaluate against the contract’s actual observed settlement series. ### Build a weather panel Request needed variables only, cache responses and refresh with the selected model’s run schedule. ## Pricing and total cost Free hosted access is non-commercial, with attribution required. Commercial integrations need a subscription; data licensing and hosted-service terms remain separate. ### Free / Open-Access Free for non-commercial use - 600 calls/minute; 5,000/hour; 10,000/day; 300,000/month. ### API Standard Subscription; see provider pricing - Commercial use; 1 million monthly calls. - Dedicated customer endpoint; historical forecast/model-run APIs excluded. ### API Professional Subscription; see provider pricing - Commercial use; 5 million monthly calls. - Historical forecast, previous-run and single-run APIs. ## Feed access and configuration 1. Read the contract specification and choose coordinates, variables, units and timezone. 2. Select best\_match or models; historical tests require forecast-run history. 3. Start with a bounded GET request and choose a commercial plan when needed. [Read forecast API documentation]() ## Useful links - [Compare Open-Meteo access plans]() ### What to check - Grid forecasts do not automatically match station observations. - Reanalysis may use information unavailable at prediction time. - Model and archive start dates differ. - Daily maxima depend on timezone and reporting window. - Free hosted terms are non-commercial; data licensing is a separate condition. A closer look ## Ratings & reviews Editorial rating **4.0**/ 5 0 user reviews PredictionToolkit editorial ### Our take on Open-Meteo Open-Meteo's model selection and forecast archives give researchers several ways to study weather conditions, within the stated access limits. For a weather contract, check the station, time zone and observation source used for settlement: a model-grid forecast may differ from the official station reading. **Assessment criteria:** Task usefulness, documented scope, setup clarity, and access and cost transparency. **Assessment date:** 2026-10-01 **Documentation reviewed:** 2026-10-01 Documentation-based assessment. [How we rate]() ### User reviews 0 The main score switches to user ratings after 5 published reviews. **Be the first to share your experience** A specific example helps the next person choose the right tool. ## Related tools [Browse category]() ![Marketlens Python installation and Strategy quickstart]() ![Marketlens Python SDK logo]()[Marketlens Python SDK]() SDK**4.0**Editorial Compare fast bar experiments with detailed L2 replay, reusing downloaded history between strategy changes. - Language Python Replay related temperature buckets together. ![Official Polymarket Gamma API market-discovery documentation]() ![Polymarket Gamma API logo]()[Polymarket Gamma API]() Data API**4.0**Editorial Discover contracts and their identifiers before querying executable prices or building a searchable catalog. - Access API Inspect original weather-contract definitions. ![Scanverity resolution-risk analyzer and public example]() ![Scanverity logo]()[Scanverity]() restricted Data API**3.5**Editorial Examine rules, deadlines and resolution evidence, then monitor selected contracts for changes. - Access Web · API · Email Review settlement sources and deadline language. ## Frequently asked questions about Open-Meteo ### Is it a Polymarket bot? It supplies external weather context for a separate research or trading workflow. ### Which history avoids look-ahead leakage? Archived runs initialized before the decision. ### Does keyless access permit unrestricted commercial hosting? Commercial hosted use follows subscription terms. ### Can I compare several models? Select individual models instead of relying only on best\_match. In this profile