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Weeze, nestled in the Lower Rhine region of North Rhine-Westphalia, Germany, occupies a relatively flat landscape characteristic of the North German Plain. Situated at coordinates 51.6267, 6.1967, the town’s elevation is low, averaging around 35 meters above sea level, contributing to limited natural air dispersion. The River Nette flows nearby, influencing local humidity and potentially trapping pollutants during temperature inversions. Weeze’s location is significantly shaped by its proximity to the Dutch border and the industrial Ruhr area to the east. While Weeze itself is not heavily industrialised, it experiences spillover effects from regional economic activity. Surrounding the town are extensive agricultural lands, primarily used for arable farming, which can contribute to particulate matter from agricultural practices, especially during harvest seasons. The urban-rural gradient is relatively sharp; moving south and east quickly transitions into more intensive agricultural use, while to the north, the landscape remains largely open and rural. This geographical setting, combined with prevailing westerly winds, means that pollutants can accumulate locally, particularly during stable atmospheric conditions. The airport, a major regional hub, is a significant local source of emissions, impacting air quality in and around the town.

Weeze’s air quality follows a distinct seasonal pattern. Winter, from December to February, often sees the poorest air quality due to increased heating demands, leading to higher emissions of particulate matter (PM) and nitrogen oxides (NOx). Temperature inversions are common during these months, trapping pollutants near the ground. Fog, frequent in the Rhine valley, exacerbates this effect. Spring (March-May) brings a gradual improvement as temperatures rise and heating needs decrease, but agricultural activities begin, potentially increasing PM10 from field work. Summer (June-August) generally offers the cleanest air, aided by prevailing winds and higher atmospheric mixing. However, occasional heatwaves can lead to increased ozone formation. Autumn (September-November) sees a return to poorer conditions as heating starts again and agricultural harvesting releases dust. Sensitive individuals, such as those with respiratory conditions, should be particularly cautious during winter and autumn. Months to avoid strenuous outdoor activity are December, January, and November. For those with asthma or heart conditions, limiting exposure during calm, cold days is crucial. Monitoring local forecasts and adjusting activity levels accordingly is recommended throughout the year, especially near the airport.