MMM-DWD-Pollen

A MagicMirror² module that displays pollen forecast data from the DWD (Deutscher Wetterdienst) for Germany.

Data source: DWD Open Data — no API key required.

The module supports three display modes:

Clone this repository into your MagicMirror modules folder:

cd ~/MagicMirror/modules
git clone https://github.com/carstendirks/MMM-DWD-Pollen.git

No npm install needed — v2.0 has zero external dependencies.

If you previously ran npm install, you can safely delete node_modules and package-lock.json from the module folder. The deprecated request package is no longer used.

Add to your config/config.js:

{
    module: "MMM-DWD-Pollen",
    position: "bottom_right",
    header: "Pollenwarnung",
    config: {
        updateInterval: 1 * 60 * 60 * 1000, // every 1 hour
        DWD_region: 92,                       // Rhein-Main
        displayMode: "visual",                // "number", "icon", or "visual"
        pollenList: "Hasel,Erle,Esche,Birke,Graeser,Roggen,Beifuss,Ambrosia",
        showNullValue: false,
    }
},

10  Schleswig-Holstein und Hamburg
11  Inseln und Marschen
12  Geest, Schleswig-Holstein und Hamburg
20  Mecklenburg-Vorpommern
30  Niedersachsen und Bremen
31  Westl. Niedersachsen/Bremen
32  Östl. Niedersachsen
40  Nordrhein-Westfalen
41  Rhein.-Westfäl. Tiefland
42  Ostwestfalen
43  Mittelgebirge NRW
50  Brandenburg und Berlin
60  Sachsen-Anhalt
61  Tiefland Sachsen-Anhalt
62  Harz
70  Thüringen
71  Tiefland Thüringen
72  Mittelgebirge Thüringen
80  Sachsen
81  Tiefland Sachsen
82  Mittelgebirge Sachsen
90  Hessen
91  Nordhessen und hess. Mittelgebirge
92  Rhein-Main
100 Rheinland-Pfalz und Saarland
101 Rhein, Pfalz, Nahe und Mosel
102 Mittelgebirgsbereich Rheinland-Pfalz
103 Saarland
110 Baden-Württemberg
111 Oberrhein und unteres Neckartal
112 Hohenlohe/mittlerer Neckar/Oberschwaben
113 Mittelgebirge Baden-Württemberg
120 Bayern
121 Allgäu/Oberbayern/Bay. Wald
122 Donauniederungen
123 Bayern nördl. der Donau, o. Bayr. Wald, o. Mainfranken
124 Mainfranken

Region map: DWD Gebiete

• New visual display mode with SVG pollen icons and gradient severity bars
• Zero dependencies — replaced deprecated request package with built-in Node.js https
• Improved reliability — request timeout, size limiting, automatic retry with exponential back-off
• Bug fix — date comparison now uses full date instead of getDay() (which wraps weekly)
• Error handling — displays error state instead of silently failing
• Cleaner code — lookup tables, ES6+ syntax, consistent architecture

MIT © 2020 Carsten Dirks