1. Does your airline have low visibility operational approval?
2. Does the airport have low visibility procedures published in the AIP?
3. Does ATC have low visibility procedures approved?
Any general limit will be subject to local/national rules overriding it if these are more strict.
Which visibility are you going to consider, Met Observed, RVR or IRVR?
Where are the measuring points?
What are the runway markings?
What are the runway lighting provisions (location and intensity)?
Do you have localiser guidance?
Once you have all of that information for the specific runway and set of operational procedures you will be using, then you can calculate the limits.
The airport may be in low visibility mode, but you may not!