THE highest heat index or indicator of human discomfort  was recorded in Dagupan City, Pangasinan on Tuesday, the state bureau said.

The Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) registered a heat index of 51.7 degrees Celcius (C) as a result of the combined effects of a 36.7C air temperature and 62 percent relative humidity at 2 p.m. on Tuesday. This is higher than the previous record of 48.2 also in Dagupan on April 3.