The Directorate-General for Health (DGS) issued a warning on Tuesday, September 15, alerting to a situation of poor air quality in mainland Portugal. A mass of air from the North African deserts is transporting suspended dust to the territory, with greater intensity expected in the southern area, particularly in Lisbon and the Tagus Valley, Alentejo, and Algarve. The phenomenon was predicted for September 14 and 15.
The problem is due to the increase in the concentration of inhalable particles of natural origin, known as PM10. According to the DGS, these particles can be transported over long distances through atmospheric circulation and affect air quality, and dust episodes from the arid zones of North Africa are already known in Portugal.
The DGS recommends that, especially children, elderly people, people with chronic respiratory problems such as asthma, and cardiovascular patients, remain indoors and keep windows closed while the phenomenon persists. The general population should avoid prolonged efforts and limit outdoor physical activity, as well as exposure to tobacco smoke and contact with irritant products.
Chronic patients should continue to follow their ongoing medical treatments. In case of worsening symptoms, the DGS advises contacting SNS 24 through the number 808 24 24 24 or using a health service. Information on air quality can be followed through the QualAr system, of the Portuguese Environment Agency.
