In this paper it is shown how the hydrodynamic solutions of the polar wind can be fitted to the kinetic solutions applicable to the upper ionospheric polar regions where the Coulomb collisions are negligible. The bulk velocity and density distribution of the O+, H+ and He+ are determined for boundary conditions deduced from the OGO 2 observations by Taylor et al. (1968), and for unequal ion and electron temperatures. The results are compared to the observations of Hoffman (1971) (Explorer 31) near 3000km altitude.