There might be some info on the github and the older releases.
Hi.
If you’re looking for a way to track pollen, my integration might be just what you need. I built this integration primarily for myself, and it creates a sensor for the general evaluation of pollen levels—the SILAM Pollen Index (Very Low, Low, Moderate, High, Very High)—along with separate sensors for each pollen type. The sensors display the modeled number of pollen grains per cubic meter, with data pulled from the SILAM Pollen website.
You can find more details in this post: SILAM Pollen Allergy Sensor Integration for HA and on the GitHub repository.
have a look at this integration