MANILA, May 4 -- The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) warned of dangerous heat index levels in 30 areas across the country on Saturday.

Based on the weather bureau's forecast, the following areas may have a heat index ranging from 42 degree C to 47 degree C:

NAIA Pasay City, Metro Manila - 42 degree C Sinait, Ilocos Sur - 42 degree C Laoag City, Ilocos Norte - 45 degree C Dagupan City, Pangasinan - 47 degree C MMSU, Batac, Ilocos Norte - 43 degree C Bacnotan, La Union - 44 degree C Aparri, Cagayan - 46 degree C Tuguegarao City, Cagayan - 43 degree C ISU Echague, Isabela - 42 degree C Iba, Zambales - 44 degree C Casiguran, Aurora - 42 degree C Cubi Pt. Subic Bay Olongapo City - 42 degr...