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Bessonovka, nestled within the Penzenskaya Oblast’ of Russia, occupies a geographically significant position within the East European Plain. Located at approximately 53.31° N, 45.04° E, the town’s terrain is characterized by gently rolling hills and fertile agricultural land, typical of the Volga Upland. Its elevation, around 180 meters above sea level, contributes to localized microclimates and influences air circulation patterns. The surrounding landscape is predominantly rural, a patchwork of fields cultivated for grains and sunflowers, interspersed with birch and aspen forests. This proximity to intensive agricultural zones introduces potential sources of particulate matter, particularly during planting and harvesting seasons, as well as ammonia emissions from fertilizer use. Bessonovka sits approximately 30 kilometers northeast of the larger city of Penza, a regional industrial hub. This adjacency means the town can experience downwind impacts from Penza’s industrial activities, including potential emissions from manufacturing and transportation. The urban–rural gradient is gradual, with Bessonovka exhibiting a distinct small-town character, lacking the dense urban fabric of Penza. The town is not directly adjacent to any major rivers or lakes, which limits the natural cleansing effect of water bodies on air quality. The prevailing winds generally flow from the west, carrying potential pollutants from Penza and surrounding agricultural areas towards Bessonovka, a factor that significantly shapes the town’s air quality profile. The relatively flat terrain can also exacerbate the trapping of pollutants during periods of stable atmospheric conditions.

Bessonovka’s air quality experiences a distinct seasonal cycle dictated by its continental climate. Winters, lasting from November to March, are typically the most challenging period. Cold temperatures frequently lead to temperature inversions, where a layer of warm air traps cooler air near the ground, preventing the vertical dispersion of pollutants. This phenomenon, coupled with reduced sunlight hours and frequent fog, results in a build-up of particulate matter and other emissions. Agricultural activities, though reduced, still contribute to ammonia levels. Spring (April-May) brings a gradual improvement as temperatures rise and winds increase, dispersing pollutants. However, the agricultural season begins, introducing dust from tilling and fertilizer application. Summer (June-August) generally offers the best air quality, with warmer temperatures promoting atmospheric mixing and frequent rainfall helping to cleanse the air. However, dry spells can lead to increased dust levels. Autumn (September-October) sees a return to more challenging conditions as temperatures cool and the harvest season intensifies agricultural emissions. The months of December and January are particularly concerning due to the combination of cold temperatures, inversions, and limited sunlight. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during these periods. During the spring and autumn, when agricultural activity is high, wearing a mask can help reduce exposure to particulate matter. Staying informed about local weather forecasts and air quality reports is crucial for making informed decisions about outdoor activities throughout the year.