--- title: "SILAM Pollen monitor" description: "SILAM Pollen monitor is a Marketplace integration for Home Assistant. It has 243 installs sharing analytics, needs the vendor's cloud and was last updated July 14, 2026." canonical: "https://vulpo.app/integrations/marketplace/danishru-silam-pollen" url: "https://vulpo.app/integrations/marketplace/danishru-silam-pollen.md" last-updated: "2026-10-22" version: "1.4" --- # SILAM Pollen monitor > SILAM Pollen monitor is a Marketplace integration for Home Assistant. It has 243 installs sharing analytics, needs the vendor's cloud and was last updated July 14, 2026. SILAM Pollen monitor is an integration that provides pollen level sensors and a pollen forecast for a chosen location. Data comes from the SILAM Thredds server, with forecasts calculated by the Finnish Meteorological Institute, so it relies on the vendor's cloud. It adds sensors for alder, birch, grass, hazel, mugwort, olive and ragweed, plus a service status sensor, a fetch duration sensor, and a weather entity with the pollen forecast. Several locations can be set up as separate services, and the pollen types, update interval and forecast duration can be chosen. It keeps the last loaded data so sensors can recover after a restart or a short network problem. Actions for manual update and full refresh, diagnostics download and repair notices are also included, and setup is done in the UI. Automatic summary of the README and code of danishru/silam\_pollen. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/contact) [Open in My Home Assistant](https://my.home-assistant.io/redirect/hacs_repository/?owner=danishru&repository=silam_pollen&category=integration) On Home Assistant 2026.11 or newer? [Open it in the Marketplace](https://my.home-assistant.io/redirect/marketplace_repository/?owner=danishru&repository=silam_pollen&category=integration) ## Supports - **Uses the vendor's cloud**: Needs an internet connection and an account with the vendor. - **From the Marketplace**: Installed through the Marketplace, formerly HACS. - **Actively maintained**: Its author released or pushed a change in the last six months. ## Setting it up Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services. ### Create SILAM Pollen Service - **Observation zone** - **Altitude above sea level** - **Pollen type** - **Update Interval (minutes, minimum 30)** - **Enable pollen forecast?**: The forecast feature may significantly increase API response time. - **Enable legacy index sensor (deprecated)**: Deprecated: will be removed in a future release. - **Desired forecast duration (36–120 h; default 36)** ### Create SILAM Pollen Service - **Zone Name** - **Location** - **Altitude above sea level** Also asked when at the create silam pollen service step. ### After setup - **Update Interval (minutes, minimum 30)** - **Pollen type** - **Enable pollen forecast?**: The forecast feature may significantly increase API response time. - **Enable legacy index sensor (deprecated)**: Deprecated: will be removed in a future release. Keep enabled only if you rely on old automations or dashboards. - **Desired forecast duration (36–120 h; default 36)** Texts from the code of [danishru/silam\_pollen](https://github.com/danishru/silam_pollen). ## Entities - **Sensors**: Pollen index (legacy), Fetch Duration, Forecast horizon, Alder, Birch, Grass, Hazel, Mugwort, Olive, Ragweed, SILAM service status - **Weather**: Pollen Forecast ## Actions - **Manual Update**: Manually trigger a data refresh for the selected SILAM Pollen services. Fields: SILAM Pollen service - **Full Refresh**: Force a full data refresh for the selected SILAM Pollen services. Fields: SILAM Pollen service ## Troubleshooting - **Diagnostics**: Downloads a diagnostics file to attach to a bug report. - **Repair notices**: Notices it can show in Settings, Repairs: Selected SILAM dataset is no longer available, Legacy SILAM index sensor will be removed ## From the README > Integration for Home Assistant using the dataset “Best time series obtained from the latest available run” from the SILAM Thredds server to create a service with pollen level sensors for a specific location. The forecast calculation is carried out by the Finnish Meteorological Institute taking into account aerobiological, phenological, and meteorological observations. > > - Dedicated allergen layer with SILAM pollen concentrations (core feature) > - Individual forecast lines for each allergen with peak highlighting and trend indicators > - Integrated pollen + full weather forecast in a single, unified timeline > - Multiple forecast display modes (Standard / Focus / Minimal) with configurable layouts > - Fully interactive: tap / hold / double actions on forecast elements > - Local, self-contained card — no CDN, works fully offline From the README of [danishru/silam\_pollen](https://github.com/danishru/silam_pollen#readme), [MIT License](https://spdx.org/licenses/MIT.html). Shortened. ## At a glance - Kind: Marketplace integration - Category: [Weather and alerts](https://vulpo.app/integrations/category/weather-and-alerts.md), Air quality and pollen - Number: 243 installs sharing analytics; 40 GitHub stars - Connection: Needs the vendor's cloud - Upkeep: Updated in the last 6 months - Needs: Needs the Marketplace (HACS on 2026.10 and older) - Latest version: v0.4.1, last updated July 14, 2026 - Domain: `silam_pollen` - Source: - Issues: - Screenshot: https://vulpo.app/integrations-img/7bd92db6f993fe68.webp (from danishru/silam\_pollen's README) - Screenshot: https://vulpo.app/integrations-img/781cc1780222b636.webp (from danishru/silam\_pollen's README) - Screenshot: https://vulpo.app/integrations-img/540b3aa31c0b5c0c.webp (from danishru/silam\_pollen's README) In Vulpo: Chart card, Lumen sky (Pro), Apple Watch Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about) Last updated 2026-10-22. Source: https://vulpo.app/integrations/marketplace/danishru-silam-pollen --- - HTML version of this page: https://vulpo.app/integrations/marketplace/danishru-silam-pollen - Site index for agents: https://vulpo.app/llms.txt - Everything in one document: https://vulpo.app/llms-full.txt - All pages: https://vulpo.app/sitemap.xml