Where to Find and Catch Luxio
From Pokemon Go Wiki
Luxio are found and captured in Nest and Habitat locations.
Nests
Luxio Nests are locations that consistently spawn Luxio.
Habitats
Luxio Habitats are spawn locations where Luxio is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: