How we handle data

This page explains which data sources are currently active, how we publish the data and why some modules deliberately go live later. The last update to the data rules was made on March 8, 2026.

How the forecast data reaches the pages

The current weather, the hourly trends and the multi-day outlooks come from Open-Meteo. On top of this sits a validation, caching and rendering layer that decides how the data appears on the home page, on a locality page or on a thematic landing page.

Sources by data layer

The current weather and the forecast are obtained through Open-Meteo. Alerts are only integrated with a verified flow. The radar and maps layer is for now mainly a weather navigation center; we do not declare our own radar flow until it is live in production. Air quality, pollen and snow are only published when the source is stable and the mapping is clean.

Data quality and freshness

Each data block is evaluated according to its availability, freshness and relevance. When the data is old, incomplete or inadequate for a locality, we prefer caution over misleading visibility.

How we close errors and gaps

When problems are detected, we check whether the cause lies in the mapping, in the frontend output or in the data source. Observations from users are especially valuable in the case of localities, municipalities and tourist destinations.