As of 3:08 PM AST on August 13, 2026, all 3 cities in Guayanilla Municipio, PR in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Guayanilla, PR with a reading of 6.
Over the next 24 hours, the highest UV Index reading in Guayanilla Municipio, PR is expected to be 11.7 in Guayanilla between 12:00 PM - 1:00 PM AST tomorrow.