Allergy-aware Home Assistant, powered by SILAM data.
SILAM Pollen turns open forecast data from the Finnish Meteorological Institute into practical Home Assistant entities, dashboards, automations, and future map context.
Pollen context where your automations already live
From forecast model to clear Home Assistant state
SILAM Pollen brings pollen context into Home Assistant dashboards, notifications, and routines without a separate access key or paid account.
Built around real daily choices
- Should the windows stay closed during a high birch or grass period?
- Is tomorrow likely to be better for a walk or ventilation?
- Is the external service unavailable, or is the selected point outside coverage?
- Which allergen is driving the elevated index?
Forecasts are informational and do not replace medical guidance, but they are useful context for smart home routines and personal planning.
What the integration creates
Pollen concentration sensors
Separate sensors for selected pollen types, updated together and exposed as regular Home Assistant entities.
Index and leading allergen
The forecast entity can show a clear pollen condition, the allergen behind it, and tomorrow context when forecast data is enabled.
Diagnostics for troubleshooting
Service status, request time, forecast horizon, saved data, request type, and selected dataset help explain the last update.
Current values and short forecast views
One forecast entity, several views
When forecast mode is enabled, SILAM Pollen creates a Home Assistant weather entity for pollen conditions. It can show near-term changes, day and night blocks, and daily context from the same SILAM data.
Designed to update responsibly
Forecast requests can be heavier than current values, so the integration uses shared updates, saved-data recovery, incremental refresh paths, and a full refresh service when fresh data is explicitly needed.
Check your location before building automations
Several SILAM v6.1 coverage areas
The integration can work with Europe, Northern Europe, and Finland-focused SILAM pollen datasets. Some choices are shown or selected only when the configured coordinates are actually covered.
Use pollen context in real Home Assistant scenarios
Ventilation decisions
Combine pollen state with weather, humidity, CO₂, or window sensors before opening vents or sending reminders.
Personal notifications
Notify sensitive users when grass, birch, ragweed, or the general index crosses your own threshold.
Dashboards and cards
Show current values, tomorrow context, forecast blocks, diagnostics, and coverage links in one home dashboard.
Install, verify coverage, then automate
Install the integration
Start with the guide, choose a Home Assistant zone or manual coordinates, select allergens, then decide whether forecast mode is needed.
Verify coverage
Use the visual coverage page and the built-in setup check to confirm that SILAM has data for your selected point.
Follow updates
Read the release notes when entities, saved data, diagnostics, website pages, or forecast behavior changes.
See what is next
The roadmap tracks planned work such as better setup guidance, richer forecast context, map overlays, and possible new data types.