According to the Portuguese Institute of the Sea and Atmosphere (IPMA), "suspended dust is expected from the afternoon onwards, more likely in the South region" and will last at least until Sunday, April 7th.

A "temperature rise, especially the maximum" is also predicted across the country, with some districts such as Aveiro and Santarém reaching 27 degrees.

But this heat will be short-lived because at the weekend a "drop in temperature" and "periods of rain" are expected in several regions of mainland Portugal, which together with the dust, could lead to a 'mud rain'.