README.md

metadata

license: cc-by-4.0
tags:
  - weather
  - aarhus
  - denmark
  - predictions
  - forecast
  - machine-learning

DMI Aarhus Predictions

Prediction and frontend contract dataset for the Aarhus weather pipeline. Maintained by Ciroc0.

Primary files

File	Purpose	Produced by
predictions_latest.parquet	Current future + verified prediction store	dmi-collector
frontend_snapshot.json	Primary integration contract for the Vercel frontend	dmi-collector

Compatibility files

File	Status	Notes
predictions.parquet	Legacy	Still read by compatibility code
history_snapshot.json	Legacy	Only used by older frontend fallback logic

Update pattern

• predictions_latest.parquet is rewritten on scheduled prediction runs
• verification updates actual columns once the target hour is in the past
• frontend_snapshot.json is regenerated after prediction and verification writes

Schema highlights for predictions_latest.parquet

• target_timestamp
• reference_time
• lead_time_hours
• lead_bucket
• prediction_made_at
• city
• verified
• dmi_temperature_2m_pred
• dmi_windspeed_10m_pred
• dmi_windgusts_10m_pred
• dmi_precipitation_probability_pred
• dmi_precipitation_pred
• ml_temp
• ml_wind_speed
• ml_wind_gust
• ml_rain_prob
• ml_rain_amount
• actual_temp
• actual_wind_speed
• actual_wind_gust
• actual_precipitation
• actual_rain_event
• actual_rain_amount

Snapshot contract

frontend_snapshot.json is the main public-facing contract and contains:

• location metadata
• generated timestamp
• target labels and explanations
• current weather block
• 48-hour forecast rows
• historical backtest payload
• verification metrics
• lead-bucket summary
• feature importance
• model info
• alert rows

Attribution

This dataset is released under CC BY 4.0.

Please preserve attribution to:

• Ciroc0
• Open-Meteo - https://open-meteo.com
• DMI / DMI HARMONIE