As of 4:35 AM AST on September 18, 2025, all 2 cities in San Germán Municipio, PR in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in San Germán Municipio, PR is expected to be 8.4 in San Germán between 2:00 PM - 3:00 PM AST today.