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Cuijk, nestled in the southeastern province of Noord-Brabant, Netherlands, occupies a geographically significant position within the Meuse-Rhine Euroregion. Its coordinates (51.7269, 5.8794) place it on relatively flat terrain, characteristic of the southern Dutch landscape, gently sloping towards the Meuse River (Maas in Dutch), which forms a natural boundary to the east. The surrounding landscape is a mosaic of intensively farmed fields – primarily arable land used for crops like potatoes, sugar beets, and grains – interspersed with pockets of woodland and riparian habitats along the river. This agricultural intensity contributes to potential sources of ammonia emissions, a significant air pollutant in the Netherlands. Cuijk’s urban character is that of a historic market town, retaining a traditional core with narrow streets and older buildings, gradually expanding outwards with modern residential areas. The urban–rural gradient is relatively smooth; the town seamlessly blends into the agricultural surroundings. The proximity to the Meuse River, while providing a scenic backdrop and facilitating transport, can also influence local air quality. Prevailing westerly winds often carry pollutants from industrial areas further inland, and the river's presence can sometimes exacerbate fog formation, trapping pollutants close to the ground. While not directly adjacent to major industrial belts, Cuijk’s location within a densely populated and economically active region means it is susceptible to regional pollution transport. The elevation is low, generally below 20 meters above sea level, which can contribute to stagnant air conditions under certain meteorological circumstances, hindering pollutant dispersion. The surrounding area is largely rural, with smaller villages and farms contributing to a diffuse pollution load.

Cuijk’s air quality experiences a distinct seasonal pattern dictated by the Netherlands’ temperate maritime climate. Spring (March-May) often sees elevated ammonia levels due to increased agricultural activity – fertilizer application and livestock farming – coinciding with warmer temperatures that accelerate volatilization. This period can be challenging for individuals with respiratory sensitivities. Summer (June-August) generally offers the best air quality, with frequent sunshine and prevailing westerly winds effectively dispersing pollutants. However, periods of high pressure can lead to temperature inversions, trapping pollutants near the ground, particularly in the evenings. Autumn (September-November) brings a gradual decline in air quality as temperatures cool and fog becomes more frequent, especially in October and November. The increased humidity and reduced wind speeds contribute to pollutant accumulation. Winter (December-February) is typically the most challenging season. Cold, still air, coupled with frequent fog, leads to a significant build-up of particulate matter and nitrogen oxides. Residential heating, particularly with older, less efficient systems, also contributes to local pollution. During these months, limiting prolonged outdoor exertion, especially for children, the elderly, and those with pre-existing respiratory conditions, is advisable. The agricultural sector’s impact is lessened during winter, but the combination of meteorological factors creates a higher risk of poor air quality. The transition periods between seasons are particularly variable, with sudden shifts in weather patterns influencing pollutant dispersion.