Another heatwave hit the island on the weekend and is expected to last until Thursday, the met office said.
On Monday authorities issued a yellow alert for all areas except the mountains.
The yellow warning informs employees working outdoors to take all necessary measures for the protection of workers including adequate rest and breaks during the hottest hours.
From today, temperatures will rise to 41C inland, 35C along the southern and eastern coasts, 33C on the western and northern coast and 31C in the mountains, the met office announced.
The temperatures will remain largely unchanged over the next couple of days, a spokesperson at the met office said. On Thursday a modest decline is expected.
Throughout, the weather will be mostly clear and sunny with variable winds. Humidity levels will remain unchanged at 30 to 40 per cent inland and 70 per cent in coastal areas.
At night the temperature will drop to around 24C on the south and east coasts, 22C inland and 21C in the mountains.