By Alexandria San Juan
A scorching 42.2 degrees Celsius (°C) heat index was recorded in Pasay City over the weekend, the hottest air temperature so far in Metro Manila since the dry season entered.
In data released on Monday by the Philippine Atmospheric, Geophysical and Astronomical Services Administration, a maximum heat index of 42.2 °C was observed in its NAIA Station in Pasay City on Sunday.
According to PAGASA, heat index refers to the actual feel of temperature, opposed to the temperature measured by a thermometer.
The high air temperatures and high relative humidity are the factors considered in heat index which give high apparent temperatures or indices.
The state weather bureau considered heat indices of 41°C to 54°C as “dangerous,” meaning heat cramps and heat exhaustion are likely, and a heat stroke is probable with continued activity.”
Meanwhile, heat indices of 32°C to 41°C calls for “extreme caution” in which heat cramps and heat exhaustion are possible and continuing activity could also result in heat stroke.
While a dangerous level of temperature was recorded in Pasay, other cities in Metro Manila experienced extreme caution of heat index with 37.7 °C in Quezon City, and 36.8 °C in Manila.
Air temperature also continues to rise across the country as dangerous levels of heat index was noted in some provinces on Sunday.
Highest air temperature in the country was recorded in Ambulong, Batangas reaching a dangerous level of heat index of 45.5 °C.
Apart from Batangas, a dangerous heat index was also recorded over San Jose City, Occidental Mindoro at 44.1 °C; Cuyo, Palawan at 43.9 °C; Catbalogan, Western Samar at 43.2 °C; Sangley Point, Cavite at 43 °C; Legaspi City, Albay at 42 °C; Casiguran, Aurora at 41.8 °C; Dagupan City, Pangasinan at 41.5 °C; and Roxas City, Capiz at 41.3 °C.
The state weather bureau advised the public to stay indoors as much as possible, wear lightweight and light colored clothing, and to drink plenty of water regularly.