  Spatial variation in the intensity of magnetospheric and ionospheric
fluctuation during solar storms creates ground-induced currents, of importance
in both infrastructure engineering and geophysical science. This activity is
currently measured using a network of ground-based magnetometers, typically
consisting of extensive installations at established observatory sites. We show
that this network can be enhanced by the addition of remote quantum
magnetometers which combine high sensitivity with intrinsic calibration. These
nodes utilize scalable hardware and run independently of wired communication
and power networks. We demonstrate that optically pumped magnetometers,
utilizing mass-produced and miniaturized components, offer a single scalable
sensor with the sensitivity and stability required for space weather
observation. We describe the development and deployment of an off-grid magnetic
sensing node, powered by a solar panel, present observed data from periods of
low and high geomagnetic activity, and compare it to existing geomagnetic
observatories.
