Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Electrical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology, 2012 / In order to effectively determine the occurrences of space weather anomalies in near Earth orbit, a highly sensitive space-grade magnetometer system is needed for measuring changes in the Earth’s magnetic field, which is the aftermath of space weather storms. This research is a foundational work, aimed at evaluating a commercial-off-the-shelf (COTS) high temperature DC SQUID (superconducting quantum interference device) magnetometer, and establishing the possibility of using it for space weather applications. A SQUID magnetometer is a magnetic field measuring in strument that produces an electrical signal relative to the sensed external magnetic field intensity.