The Tempest-Sun Mages are an organization of spellcasters who protect the Magaambya, the Inner Sea region's oldest school of magic located in the town of Nantambu in the Mwangi Expanse. They watch from the air for any incursion from the jungle, particularly from the forces of the Gorilla King of Usaro.1
The Tempest-Sun Mages use their spycraft and influence to maintain a careful balance of power not just in Nantambu, but throughout the Mwangi Expanse. They keep a particularly close watch on the demonic forces of Usaro.3
For additional as-yet unincorporated sources about this subject, see the Meta page.