In Riga, with the onset of autumn and changes in weather conditions, a deterioration in air quality can be observed. The concentration of nitrogen dioxide (NO2) has increased in some periods, and Riga airTEXT forecasts also predict poor air quality in several areas of the capital in the coming days.
Increased air pollution can have the greatest impact on sensitive population groups – children, seniors, people with asthma and other chronic respiratory diseases, as well as people with cardiovascular diseases. It is recommended that these residents, during periods of poor air quality, keep an eye on their well-being and avoid prolonged and intense outdoor physical exertion as much as possible, especially in areas with heavy traffic.
In autumn, the air quality in the city can be worsened by a set of conditions. As the air temperature decreases, temperature inversions are more likely, during which pollutants dissipate less and accumulate in the surface air layer. With the start of the heating season, emissions from heating buildings are also increasing, which can increase the concentration of fine particulate matter, including PM2.5.
Windless and long-lasting stable weather conditions also contribute to the accumulation of air pollution. Urban nitrogen dioxide concentrations, on the other hand, are significantly affected by road transport emissions, and their impact is more pronounced during periods when air exchange is difficult.
Riga air quality forecasts can be followed in Riga airTEXT www.rigaairtext.lv, where information on NO2, PM10, PM2.5 and ozone (O3) concentration forecasts is available. The system prepares a forecast of air quality for the next three days and makes it possible to detect periods of possible deterioration of air quality in a timely manner.
Riga municipality invites residents, especially sensitive population groups, to follow air quality forecasts in the coming days and plan long-term or intensive outdoor activities accordingly.
Information prepared by: Mārtiņš Vilemsons, Project Coordinator, External Communication Division of Riga City Council, e-mail: martins.vilemsons@riga.lv.