Mārupe Air Quality Index (AQI)

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Mārupe, a municipality in Latvia, occupies a geographically strategic position just outside Riga, the nation’s capital. Situated at coordinates 56.9069, 24.0575, the terrain is largely flat, characteristic of the Vidzeme Plain, with an elevation generally below 50 meters. This low-lying landscape, coupled with proximity to the Daugava River and the Gulf of Riga (approximately 10km distant), influences local meteorological patterns and air circulation. Mārupe’s urban character is transitioning; historically a smaller town, it’s experiencing suburban expansion linked to Riga’s growth. This brings increased traffic and associated emissions. The surrounding landscape is a mix of agricultural land – primarily arable fields – and pine forests, typical of the Latvian countryside. To the east lies Riga, a significant source of regional pollution that can impact Mārupe’s air quality, particularly during periods of stagnant air. The urban-rural gradient is relatively sharp, with farmland quickly giving way to residential areas. The Riga International Airport, located within Mārupe, is a key economic driver but also a concentrated source of localised air pollutants, including particulate matter and nitrogen oxides. Understanding these geographical factors is crucial for assessing and mitigating air quality challenges in Mārupe.

Mārupe’s air quality follows a distinct seasonal pattern. Winter (December-February) typically sees poorer air quality due to increased reliance on solid fuel heating in residential areas, combined with temperature inversions trapping pollutants near the ground. These inversions, common in the Baltic region during cold, stable weather, prevent vertical mixing and concentrate emissions. Spring (March-May) brings a gradual improvement as temperatures rise and heating demand decreases, though agricultural activities can contribute to particulate matter from field work. Summer (June-August) generally offers the cleanest air, benefiting from prevailing westerly winds that disperse pollutants and increased vegetation absorbing carbon dioxide. However, occasional heatwaves can exacerbate ozone formation. Autumn (September-November) sees a deterioration as heating systems are reactivated and damp conditions can lead to increased wood burning. Fog, frequent in autumn, can also trap pollutants. Sensitive individuals – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter and autumn months. Monitoring wind direction is advisable; winds from the east bring pollutants from Riga. The period from June to August is generally most favourable for outdoor activities.