The pollen bulletin for the period from March 28 to April 3, crucial for allergy sufferers, indicates that in the northern region, the risk is expected to be low to moderate, similar to last week, while in the Azores and Madeira, pollen concentration will remain at a lower level.
However, the SPAIC notes that starting next Tuesday, “there is a forecast of rain” in some areas of the country, which reduces the pollen load in the air due to the “atmospheric washing” effect caused by precipitation.
“These showers have been interspersed with sunny intervals, which means that pollination occurs, and at certain times or days, pollen concentration in the air can reach moderate to high levels,” it states.
According to SPAIC, the pollen grains observed in the atmosphere primarily come from cypress trees, plane trees, and pine trees, as well as grasses, sorrel, nettle, and urticaceous plants.
The period from February to October has the highest total pollen concentrations, with peaks occurring from April to July.
Pollen from grasses, trees, and shrubs are typically the most significant triggers of allergic symptoms.
