As of 5:13 PM AST on October 8, 2025, all 3 cities in San Sebastián Municipio, PR in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is San Sebastián, PR with a reading of 0.8.
Over the next 24 hours, the highest UV Index reading in San Sebastián Municipio, PR is expected to be 10 in San Sebastián between 12:00 PM - 1:00 PM AST tomorrow.