Manila, May 16 -- Forty-four areas in the country will experience sweltering temperatures due to a danger-level heat index, the weather bureau said Saturday.

Heat index is what the temperature feels like to the human body when relative humidity combines with air.

A peak heat index of 44C is forecast in Munoz, Nueva Ecija; Camiling, Tarlac; Sangley Point, Cavite; Ambulong, Tanauan, Batangas; San Jose, Occidental Mindoro; Dumangas, Iloilo; Borongan, Eastern Samar; and Butuan City, Agusan del Norte, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).

The following areas will also see danger-level heat indices:

NAIA, Pasay City - 43C Science Garden, Quezon City - 42C Dagupan City, Panga...