The forecast for allergy symptoms is based on the responses of the Pollen Diary (website or PASYFO application) users and the daily load of airborne pollen, meteorological conditions and air pollutants. Forecasts of symptoms are divided into several groups: nose, eyes, lungs, health status and medication. The forecast is given in different color intensity circles and numbers (in ascending order) marked in legend. Blue indicates the absence of symptoms, while red indicates the most intense expression of the predicted symptoms. Also, the higher the number (the number on a scale), the more intense the expression of the predicted symptom.