As of 7:20 AM AST on July 30, 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 0.3.
Over the next 24 hours, the highest UV Index reading in Guaynabo Municipio, PR is expected to be 11.4 in Guaynabo between 12:00 PM - 1:00 PM AST today.