gironde.qdna.fr: a public-data platform in production
A living case study: a public-data platform for the Gironde and the Landes, designed, deployed and operated by QDNA since July 2026. Today the service combines weather and air quality for 479 communes.
Updated on 2 September 2026: launched in July 2026 to track the summer wildfires, the service was refocused in August 2026 on weather and air quality. The figures below are those the site publishes on its own about page, re-read on 2 September 2026; the figures of the first version (861 pages, 28 sources) no longer apply.
The platform in figures
| Commune pages | 479 communes of the Gironde and the Landes, each with its own page, plus the dashboard and the daily brief |
|---|---|
| Public sources | ATMO Nouvelle-Aquitaine (ATMO index and official stations), ATMO France (national reference data and pollen), the Sensor.Community citizen network and Open-Meteo (observations, hourly forecasts and alerts) |
| Frequency | air quality and sensors refreshed every 5 minutes, weather recomputed every hour; every page carries its last-modified date |
| Status | in production since July 2026, published by QDNA, served at the network edge (Cloudflare), with no account and no cookie |
What the site does
The service brings together in one place what public sources publish separately: the regulatory ATMO index, readings from official stations and citizen sensors, observed and forecast weather, alerts and pollen. Every covered commune has its own page, which matches the nearest stations and compares each pollutant with the WHO 2021 guidelines and the French information and alert thresholds. The site states that it is not an official service: in case of discrepancy, the official source prevails.
How it is operated
The platform illustrates the QDNA method end to end: collecting and cross-checking public sources, generating pages through automated pipelines, server-rendered publishing at the network edge, JSON-LD structured data on every page, then daily operation with automated checks. The limits are displayed on the site itself: lower accuracy of citizen sensors, publication delay of the ATMO index, uncertainty of two-day forecasts.
Why this is a QDNA case study
Designing, installing and then operating a platform in production is exactly the service QDNA offers organisations: applied here to public environmental data, applied there to your applications, agents and chatbots on sovereign AI platforms. The site is published by QDNA and its structured data references the qdna.fr/#org organisation as publisher.
Visit the site: gironde.qdna.fr.