PAGASA: Nationwide heat index at extreme caution level on Tuesday

No areas in the country are likely to reach a heat index in the 'danger level' on Tuesday, March 11, 2025, according to PAGASA.

The heat index measures human discomfort by combining air temperature and humidity levels; it is considered dangerous when it reaches between 42°C and 51°C, posing health risks such as heat cramps, exhaustion, and stroke.

Based on its latest bulletin, the highest expected heat index on Tuesday will be 41°C in Zambaonga City, Catbalogan, and Masbate City, while Metro Manila is forecasted to have a heat index of 39°C at NAIA Pasay City and 38°C in Science Garden.

A heat index between 33°C and 41°C falls under the 'extreme caution' category, where heat cramps and exhaustion are possible, and prolonged activity could lead to heat stroke.

PAGASA also noted that while temperatures will be higher over the next months, they are unlikely to reach the extremes seen in 2024.