From Ethan Siegel at Forbes:
We do have dark matter in our Solar System, and it ought to have real effects on every other particle of matter around it. If there’s any interaction cross-section between normal matter particles and dark matter particles, then direct detection experiments should have a chance to discover it right here on Earth. And even if there isn’t, the gravitational effects of the dark matter passing through the Solar System, both gravitationally captured and gravitationally free, should affect the orbits of the planets. But until our measurements become more and more precise, there simply isn’t enough of a gravitational effect to result in anything detectable. For the meantime, we have to look to the Universe beyond, not our own Solar System, to see dark matter’s effects on spacetime. More.
See also: Dark matter skeptics wanted