According to the pollen bulletin released by SPAIC, until the 2nd of June, very high concentrations of pollen are expected in the atmosphere of all regions of the continent, with a reduction on the days of precipitation, foreseen by the Portuguese Institute of the Sea and the Atmosphere (IPMA) from Monday.

“At this time, pollen grains with high allergenic capacity are present in the air at very important levels, such as those from grass, parietaria, plantain and chenopodium and olive trees”, says SPAIC.

According to forecasts, until Thursday (June 2nd) in the Lisbon and Setúbal region, pollens are at very high levels, with a predominance of olive and oak trees, grasses, parietaria, plantain and chenopodium.

In Porto (Between Douro and Minho region), pollens are also found at very high levels, with emphasis on the oak and olive trees, nettle grass, grasses, parietaria and plantain.

According to SPAIC forecasts, in the region of Trás-os-Montes and Alto Douro, pollens come mainly from oaks, pine and olive trees, and from grass, parietaria, sorrel and plantain herbs.

In Coimbra (Beira Litoral region), there is a predominance of pollen from olive and oak trees, parietaria herbs and grasses.

In the Beira Interior region, the pollen of oak, olive and pine trees, grassy herbs, plantain and parietaria stands out.

In the Alentejo region, pollen is abundant from olive and cork oak trees and from grass, plantain and parietaria herbs.

In the Algarve region, also with high levels, pollen from olive and oak trees and grass grasses, plantain and chenopodium dominate.

Low levels of pollen in the atmosphere are expected for the Azores and Madeira archipelagos.