🌼 Pollen Data for Home Assistant via Node-RED & MQTT

This Node-RED flow fetches live pollen level data from polleninformation.at and integrates it with Home Assistant using MQTT Discovery. Ideal for allergy sufferers – fully automated, location-based, and locally controlled.

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🔧 Features

• 📦 Automatic MQTT Discovery for Home Assistant
• 🛰️ Location-based with configurable GPS coordinates
• 🔄 Automatic data retrieval every 3 hours (adjustable)
• 🧠 One sensor per allergen (e.g., sensor.pollen_birch)
• 📊 Full JSON attribute data available per sensor

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📍 Configuration

🗺️ Set GPS Coordinates

Edit the "Variables" change node in Node-RED to set your location:

msg.latitude  = 46.628;
msg.longitude = 14.309;

⏰ Change the Update Interval

Adjust the "Every 3h API Call" inject node to change how often data is fetched.

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🛠️ Setup

Requirements

• Node-RED
• MQTT broker (e.g., Mosquitto)
• Home Assistant with MQTT integration enabled

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🌾 Supported Allergens

• Birch, Ash, Cypress, Alder, Hazel, Plane, Grasses, Rye, Urticaceae, Olive, Mugwort, Ragweed, Fungal Spores

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❤️ Credits

• Data Source: polleninformation.at
• Inspiration: HA Community - florianmulatz
• Integration: Node-RED with MQTT & Home Assistant

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📜 License

MIT – Free to use. No guarantee on the accuracy of the data.