The Portuguese Society of Allergology and Clinical Immunology (SPAIC) forecasts that from today until July 3, pollen concentrations in the air will range from moderate to high in most districts, with the exception of Faro, where levels will be low to moderate, and the Azores and Madeira, which will maintain low values.
In the regions of Trás-Os-Montes and Alto Douro (Vila Real), Entre Douro and Minho (Porto), Beira Litoral (Coimbra), and Lisbon and Setúbal, classified at moderate to high risk, notable pollen grains will originate from chestnut trees and grasses including plantain, sorrel, and nettle families (parietaria included).
In Beira Litoral and the district of Lisbon, forecasts also point to chenopod, amaranth, and nettle grasses.
In Castelo Branco (Beira Interior region), pollen concentration in the atmosphere will register moderate to high risk values, with an emphasis on pollen grains from chestnut, cork oak, and oak trees, as well as grasses like sorrel, plantain, chenopod, amaranth, and nettle families (parietaria included).
In Évora (Alentejo region), atmospheric pollen concentration will also reach moderate to high risk levels, highlighting pollen from olive, chestnut, eucalyptus, and cork oak trees, along with grasses such as plantain, chenopod, amaranth, and nettle families (parietaria included).
In Faro (Algarve region), levels will range from low to moderate, with notable pollen from olive, chestnut trees, and grasses like plantain, chenopod, amaranth, and nettle families (parietaria included).
In Funchal (Madeira autonomous region), pollen concentration will be low, mainly from cypress and eucalyptus trees, including grasses like nettle and the urticaceae family (parietaria included).
In Ponta Delgada (Azores autonomous region), the concentration will remain low, focusing on cypress (and/or cryptomeria), pine, eucalyptus, and chestnut trees, as well as grasses such as plantain, nettle, and the urticaceae family (parietaria included).
