Where to Find and Catch Steenee
From Pokemon Go Wiki
Steenee are found and captured in Nest and Habitat locations.
Nests
Steenee Nests are locations that consistently spawn Steenee.
Habitats
Steenee Habitats are spawn locations where Steenee 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: