As of 11:35 AM AST on April 2, 2026, all 3 cities in San Sebastián Municipio, PR in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is San Sebastián, PR with a reading of 10.4.
Over the next 24 hours, the highest UV Index reading in San Sebastián Municipio, PR is expected to be 12.3 in San Sebastián between 12:00 PM - 1:00 PM AST today.