Successful development of a real-time formaldehyde monitor will allow NASA to replace the currently used badge system that provides only a quick monthly snapshot of formaldehyde concentrations in the International Space Station, with a continuous monitor having real-time readout. The same gas sensing platform also could be adapted for meeting the needs for a multi-gas sensor for monitoring cabin air, gas regeneration, and life support systems. The compact size and low power usage permit ready adaptation to other platforms (e.g. aircraft, balloons, UAVs, ground-based networks, etc.) of interest to NASA. Since our monitor is designed for long-term operation with minimal attention and maintenance, it is expected to find use in validation of remote data sensing obtained from planned NASA atmospheric research missions.