The focus in this study is on the formation of the NO2 molecule on the O+NO system, which is the atom-diatom reaction that occurs the most according to the molecular concentrations formed as a result of lightning flashes. In this study, it was mentioned that another external effect that affects NO2 molecule concentrations, other than temperature and visible electromagnetic radiation, is the electric field. This will suppress the formation of O2 at high temperatures and the formation of NO concentration at low temperature, as it increases the barrier in the product channel on the reaction pathway and NO+O recombination in the reactant channel under favorable conditions. Under these two conditions, the NO2 population might be supported by electric field.