As of 11:23 PM AST on June 22, 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 11.5 in La Dolores between 12:00 PM - 1:00 PM AST tomorrow.