The present invention provides nonwoven webs comprising monocomponent nanocomposite fibers that enable the nonwoven webs to possess high extensibility. The monocomponent nanocomposite fibers comprise a polymer composition and a nanoparticles composition. The nonwoven webs comprising the monocomponent nanocomposite fibers have an average elongation at peak load which is greater than the average elongation at peak load of comparable nonwoven webs without nanocomposite fibers.