As of 10:00 AM AST on June 16, 2025, all 1 cities in Guaynabo Municipio, PR in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Guaynabo, PR with a reading of 3.5.
Over the next 24 hours, the highest UV Index reading in Guaynabo Municipio, PR is expected to be 10 in Guaynabo between 1:00 PM - 2:00 PM AST today.