As of 12:03 PM AST on September 5, 2026, all 5 cities in Hatillo Municipio, PR in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Hatillo, PR with a reading of 10.8.
Over the next 24 hours, the highest UV Index reading in Hatillo Municipio, PR is expected to be 10.8 in Hatillo between 12:00 PM - 1:00 PM AST today.