Space weather monitoring by the NPOESS satellite constellation includes measurements of energetic charged particles over a broad energy range. The complement of space environmental particle sensors included on NPOESS and the associated European MetOp satellites will be used to provide the primary Environmental Data Records (EDRs) for the Auroral Boundary, Auroral Energy Deposition, Medium Energy Charged Particles, Energetic Ions, and Suprathermal through Auroral Energy Particles. These EDRs will be used to derive a variety of operational products within the NOAA Space Weather Prediction Center (SWPC) that will continue to serve the needs of the airline industry, power utilities, and satellite operators, among others. The National Geophysical Data Center (NGDC) will provide data stewardship for the NPOESS space environmental EDRs and related operational products, including long-term archive and user access. The permanent archive for the NPOESS space weather data is the NOAA Comprehensive Large Array-data Stewardship System (CLASS) in which NGDC is a primary node. To some degree the infrastructure for accommodating the NPOESS space environmental data and derived products is in place due to the similarity in the space weather missions for NPOESS and the current NOAA Polar Operational Environmental Satellite (POES) system. This presentation will discuss plans for the utilization, retention, and distribution of NPOESS space weather data and products within the context of the current POES program and the future CLASS.