AbstractBackgroundArtemisiapollen is the most prevalent outdoor aeroallergen causing respiratory allergies in Beijing, China. Pollen allergen concentrations have a direct impact on the quality of life of those suffering from allergies.Artemisiapollen deposition grading predictions can provide early warning for the protection and treatment of patients as well as provide a scientific basis for allergen specific clinical immunotherapy.ObjectiveTo develop a model ofArtemisiapollen grading to predict development in patients with pollen allergy.MethodsArtemisiapollen data from four pollen monitoring stations in Beijing as well as the number ofArtemisiapollen allergen serum specific immunoglobulin E positive cases in Beijing Tongren Hospital from 2014 to 2016 were used to develop a statistical model of pollen deposition and provide optimised threshold values.ResultsA logarithmic correlation existed between the number of patients withArtemisiapollen allergy andArtemisiapollen deposition, and the average pollen deposition for three consecutive days was most correlated with the number of allergic patients. Based on the threshold of the number of patients and the characteristics ofArtemisiapollen, a five‐stage pollen deposition grading model was developed to predict the degree of pollen allergy.ConclusionsGraded prediction of pollen deposition may help pollen allergic populations benefit from preventive interventions before onset.