This dataset contains the data used to generate the results presented in the article "A computational study of accelerating, steady and fading negative streamers in ambient air". This dataset includes (1) the source code; (2) two transport data files, which contain a list of included reactions, with their reaction rate coefficients, and transport coefficients; (3) configuration files for running the simulations and (4) output log files, which contain information about the physics and numerical properties of the simulations.