An intriguing development has emerged over the past decade: space weather is undeniably linked to troposphere weather. Previously, the variability of neutral and plasma densities in the upper atmosphere pertinent to orbital and reentry prediction and the operation of communications and navigation systems were thought to arise from short-term solar variability of one kind or another. However, especially during the recent lull in solar activity, the magnitude and pervasiveness of meteorological influences on the space weather of the ionosphere-thermosphere (IT) system have become readily apparent. Most of these effects are transmitted to the IT through the propagation of waves (gravity, planetary, tidal, electromagnetic) that are excited through a variety of troposphere processes (convection, latent heating, insolation absorption by water vapor, lightning, etc.) that are quantifiable through the use of satellite-based observations of the atmosphere and oceans. This paper will provide a brief review of recent progress in this area, with special attention devoted to the excitation of atmospheric tides, and their contributions to the space weather of the ionosphere-thermosphere system.