As of 7:47 AM AST on September 13, 2026, all 2 cities in Cayey Municipio, PR in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Cayey, PR with a reading of 0.2.
Over the next 24 hours, the highest UV Index reading in Cayey Municipio, PR is expected to be 11.3 in Cayey between 1:00 PM - 2:00 PM AST today.