Reference · built on requestCommons signalAir, water & environment

DWD Pollenflug-Gefahrenindex

Three-day pollen hazard index for eight pollen types across German regions, published daily as JSON by Deutscher Wetterdienst.

Request accessPricing ↗

About

Deutscher Wetterdienst's Medizin-Meteorologie unit issues the Pollenflug-Gefahrenindex every morning for today, tomorrow, and the day after. It covers eight pollen types, Hasel, Erle, Esche, Birke, Graeser, Roggen, Beifuss, and Ambrosia, for 27 sub-regions grouped under the German states. Each value is a hazard level from 0 (keine Belastung) to 3 (hohe Belastung), with half steps such as 1-2 and 2-3; -1 marks a missing value.

The whole forecast is one file, s31fg.json, on the DWD Open Data server, with last_update and next_update stamps and a legend that maps each level to its German description.

An operator reads the sub-region for each of your sites and proposes a filter check, an air-handling setting, or a guest note before a high-pollen day.

This is a reference listing. It documents what Fibric would read from DWD Pollenflug-Gefahrenindex and what it could propose, based on the publisher's published interfaces. Fibric builds it under a managed deployment when you request it; selecting it here installs nothing.

Inputs

  • Hazard levels for today, tomorrow, and dayafter_to for each of eight pollen types: Hasel, Erle, Esche, Birke, Graeser, Roggen, Beifuss, Ambrosia
  • 27 sub-regions (partregion_id, partregion_name) under 12 region groups (region_id, region_name), for example 124 Mainfranken under 120 Bayern
  • The legend block mapping levels 0, 0-1, 1, 1-2, 2, 2-3, and 3 to descriptions from keine Belastung to hohe Belastung
  • last_update and next_update stamps in the file header, with name and sender
  • Missing values marked -1

Proposed actions

Read-only. This feed informs operators; it changes nothing.

Proposed actions are target capabilities. Every action runs propose-first and needs a validated deployment and the appropriate permissions.

What you can build

  • Hold recirculation on a birch morning

    Indoor Air reads tomorrow's Birke and Graeser levels for a building's sub-region and proposes an air-handling setting that limits outside air during peak hours. Filter Change proposes an earlier swap when levels stay at 3. You approve each change.

    With Indoor Air, Filter Change

  • Warn arriving guests with allergies

    Arrival Prep reads the three-day index for the hotel's sub-region and drafts a pre-arrival note for guests who flagged pollen allergies, with a room-ready check that windows stay closed. The front desk approves before anything is sent.

    With Arrival Prep

  • Put pollen in the morning brief

    Morning Brief adds today's hazard level per site to the day's summary, so facilities and front-of-house teams see a high-pollen day before it starts.

    With Morning Brief

Requirements

  • The partregion_id for each site, from the region table in the DWD description PDF
  • Source acknowledgement to Deutscher Wetterdienst, as the CC BY 4.0 terms require
  • A once-daily fetch timed after the update, which the file's next_update field announces
Authentication
No key or registration. The file is served over plain HTTPS from opendata.dwd.de.

Limits

  • Coverage is Germany only, at sub-region resolution, not by coordinate or postcode
  • One forecast a day; there is no intraday update and no observation series in this file
  • Values are hazard levels, not pollen counts per cubic metre
  • Field names and legend text are German; the file has no English variant

Access and pricing

Reference listing. Public feed access is separate from Fibric integration. If you request this feed, your quote covers the build, usage, and support.

Request DWD Pollenflug-Gefahrenindex ↗

Questions and answers

When is the file updated?
Daily, in the morning. The file carries last_update and next_update fields; on a recent read they showed 11:00 local time, with the next update the following day.
Which pollen types are forecast?
Eight: Hasel (hazel), Erle (alder), Esche (ash), Birke (birch), Graeser (grasses), Roggen (rye), Beifuss (mugwort), and Ambrosia (ragweed). Each has a value for today, tomorrow, and the day after.
How is the data licensed?
DWD open data may be re-used under Creative Commons CC BY 4.0 provided the source is acknowledged. Access needs no registration; DWD stores your IP address for up to 7 days for server operation.
Ask about DWD Pollenflug-Gefahrenindex

Ask about the capabilities and requirements in this listing.

For project-specific requirements, contact Fibric.

This Commons signal listing is developed, published, and supported by Fibric. It reads public data published by Deutscher Wetterdienst, Medizin-Meteorologie (opendata.dwd.de). Upstream agencies and projects are the property of their respective owners, who are not affiliated with Fibric and do not sponsor or endorse this listing. Trademark policy