The northern and central regions of the continent will have,
at least until Thursday, high and very high concentrations of pollen in the
atmosphere, according to the Portuguese Society of Allergology and Clinical
According to the pollen bulletin, released by SPAIC, until
June 30, low to moderate levels are expected in the south of the continent.
For the Madeira archipelago low levels of pollen are
expected in the atmosphere and high levels in the Azores.
SPAIC adds that throughout the country, pollen grains from
grass and parietaria herbs predominate, which have a high allergenic capacity.
In the Lisbon and Setúbal region, pollens are found at
moderate levels, with a predominance of grass and parietary herbs, and the eucalyptus
In Porto (Between Douro and Minho region), pollens are at
very high levels, especially grass and parietaria herbs and the chestnut tree.
In the region of Trás-os-Montes and Alto Douro, pollens are
also very high from grass, parietaria and plantain, and from olive and chestnut
In Coimbra (Beira Litoral region), levels are also very high
and there is a predominance of pollen from grass and parietaria grasses.
In the region of Beira Interior (Castelo Branco), pollens
with high levels of grass and parietaria herbs and olive, oak and chestnut
trees stand out.
In Évora (Alentejo region), pollens are found at moderate
levels in the atmosphere, with a predominance of pollens from grass and
In the Algarve region, with moderate levels, pollens from
grass and parietaria herbs dominate.
According to SPAIC, outdoor activities should be avoided
when pollen concentrations are high.