According to SPAIC, very high concentrations of pollen in the atmosphere are expected in all regions of the mainland and low levels for the Azores and Madeira archipelagos.
“It should be noted that, at this time of year, in almost the entire country, pollen grains with high allergenic capacity are present in the air at significant levels, such as those from grass, parietaria, plantain and chenopodium and from the olive tree”.
According to forecasts, until Thursday (May 26th) in the Lisbon and Setúbal region, pollens from olive and oak trees, grasses, parietaria, plantain and chenopodium will predominate.
In Porto (Between Douro and Minho region), the pollen of the oak and olive trees, and the grassy herbs, parietaria, plantain and nettles stand out.
In the region of Trás-os-Montes and Alto Douro, pollens come mainly from oaks, pine and olive trees, and from grasses, parietaria, sorrel and plantain.
In Coimbra (Beira Litoral region), there is a predominance of pollens from olive and oak trees, nettle and 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, pollens from olive and oak trees and grass grasses, plantain and chenopodium dominate.
According to SPAIC, outdoor activities should be avoided when pollen concentrations are high.
“Walking in the garden, mowing the lawn, camping or playing outdoor sports will increase your exposure to pollens and your risk for allergies”.