2005 Scion xB Puddle by front tire, passenger side

Tonight, about an hour after I drove around 20-25 miles round trip I found a puddle by the right front tire. Fluid appeared to be dripping from the axle, but I couldn't otherwise pinpoint the source. As far as I could tell the fluid was colorless and odorless, like water. It didn't seem comparable to any of the other fluids under the hood. I noticed no problem tonight while driving. I did use the AC a little bit today, but not much, and don't recall using it at all tonight. I did turn on the wipers briefly to clean the windows tonight, giving it a couple of hits of fluid. Thanks for your help, you guys are great!