Application Hay Forecast delivers daily information on the concentration of pollen of certain allergenic plants and pollen forecast for the next two days, for all cities in Croatia guages.   Application Hay forecast contains a list of the most common allergenic plants. With each plant is a photo and a description of the plant, as well as the code level of allergenicity. These data make it easier to identify allergens in plants in nature, and thus avoid contact with certain allergens.   Pollen is