I’m seeing the same filter twice for one of my campaigns. Is this going to affect my ads?

The filter duplication is a known bug which sometimes occurs for Facebook ad sets. It is purely a cosmetic issue, in the sense that it does not affect your weather targeting in any way, but can obviously be confusing for users. This has been flagged up with our technical team and they are working to resolve this. In the meantime, please let us know if you are experiencing this, and we can delete it for you from our side.