As of 7:21 AM AST on July 7, 2025, all 1 cities in Guaynabo Municipio, PR in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Guaynabo, PR with a reading of 0.5.
Over the next 24 hours, the highest UV Index reading in Guaynabo Municipio, PR is expected to be 9.1 in Guaynabo between 11:00 AM - 12:00 PM AST today.