Weather Data Pipeline

Multi-model ensemble forecasts from Open-Meteo for 10 global stations

Open-Meteo API

Open-Meteo provides free, high-quality weather forecast data from multiple numerical weather prediction models. The API requires no authentication and returns JSON with hourly forecasts up to 16 days ahead. We query temperature_2m, wind_speed_10m, relative_humidity_2m, and precipitation for each station.

Ensemble Models

Four independent weather models provide diverse forecasts that capture model uncertainty. GFS (Global Forecast System) from NOAA runs at 0.25 degree resolution. ECMWF (European Centre) is generally the most accurate global model. ICON (DWD Germany) excels in European coverage. GEM (Canadian) provides independent North American perspective.

Feature Engineering

Raw forecasts are transformed into 38 features per station/date. Ensemble statistics (mean, std, min, max, range) capture model agreement. Temporal encodings use sin/cos transforms of day-of-year for smooth cyclical representation. Historical accuracy metrics from recent predictions provide adaptive bias correction.