As of 8:45 PM AST on January 11, 2026, all 5 cities in Río Grande 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 Río Grande Municipio, PR is expected to be 8 in La Dolores between 12:00 PM - 1:00 PM AST tomorrow.