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Strzelin, nestled within the Dolnośląskie Voivodeship of southwestern Poland, occupies a geographically significant position within the Lower Silesian Upland. Its coordinates (50.7833, 17.0667) place it amidst a gently undulating terrain, characterized by rolling hills and fertile agricultural land. The town sits at an elevation of approximately 180 meters above sea level, influencing local weather patterns and, consequently, air quality. Strzelin’s location is crucial; it lies on the edge of a transitional zone between the Sudetes Mountains to the southwest and the more expansive plains of Lower Silesia. This proximity to the mountains can lead to localized orographic effects, where air is forced upwards, potentially dispersing pollutants, but also creating conditions conducive to fog and temperature inversions, trapping them near the ground. The surrounding landscape is predominantly agricultural, with fields of grain and rapeseed dominating the view, contributing to seasonal pollen levels and, occasionally, dust emissions during tilling and harvesting. While not directly adjacent to a major river, the area benefits from several smaller streams and drainage channels, which can influence humidity and local microclimates. Historically, the region has seen some light industrial activity, primarily related to food processing and agricultural machinery, though Strzelin itself maintains a relatively low industrial footprint compared to larger Silesian cities. The urban–rural gradient is gradual, with smaller villages and agricultural holdings seamlessly blending into the town's periphery, impacting the overall air quality profile with a mix of rural and urban influences.

Strzelin’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions. Spring (March-May) brings a noticeable increase in pollen levels from the surrounding agricultural fields, impacting those with allergies and respiratory sensitivities. The warming temperatures and increased sunlight also encourage photochemical reactions, potentially leading to elevated levels of ground-level ozone, particularly during periods of calm winds. Summer (June-August) often sees relatively good air quality due to convective mixing – rising warm air dispersing pollutants. However, heatwaves can trigger stagnant air conditions and ozone formation. Autumn (September-November) is arguably the most challenging period. As temperatures cool, temperature inversions become more frequent, trapping pollutants close to the ground, especially during clear, calm nights. Agricultural activities, such as harvesting and field preparation, contribute to particulate matter. Winter (December-February) brings cold, stable air, which, combined with potential fog events, can significantly degrade air quality. The lack of wind and frequent temperature inversions lead to pollutant accumulation. While heating systems contribute to emissions, the overall impact is often moderated by the cold air’s capacity to hold less moisture, reducing the formation of secondary pollutants. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should limit outdoor exertion during periods of fog, temperature inversions, and high pollen counts, particularly in late autumn and early winter. Monitoring local weather forecasts and air quality reports is advisable for informed decision-making.