Nimbaphrynoides occur in montane grasslands at elevations of above sea level. It is not tolerant to disturbance, and recent observations are from less impacted areas where soil was not compacted or little compacted. It can be locally very common, but the population is severely fragmented. The area has been affected by mining, and the type locality of Nimbaphrynoides occidentalis liberiensis is now an open cast mining pit. Future threats include a proposed iron ore mining concession and the arrival of a large contingent of refugees. Part of the population is protected by the Mount Nimba Strict Nature Reserve, although improved management of the site is required.