Source is contributed by @kunilkuda
Demo code (using NodeJS) is posted to https://gitlab.com/kunilkuda/sg-weather if anyone interested.
Use OneMap search API to locate longitude / latitude of the address
Use OneMap get token for auth
Use OneMap planning area to determine the town of the address
Fetch NEA 2 hours forecast, based on the town
Continuing the discussion from Mapping Road Name to the Town: