As of 12:52 PM AST on July 24, 2026, all 3 cities in Guayanilla Municipio, PR in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Guayanilla, PR with a reading of 11.8.
Over the next 24 hours, the highest UV Index reading in Guayanilla Municipio, PR is expected to be 11.8 in Guayanilla between 12:00 PM - 1:00 PM AST today.