As of 12:51 PM AST on August 26, 2026, all 1 cities in Mayagüez Municipio, PR in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Mayagüez, PR with a reading of 11.3.
Over the next 24 hours, the highest UV Index reading in Mayagüez Municipio, PR is expected to be 11.4 in Mayagüez between 1:00 PM - 2:00 PM AST today.