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Kiskunfélegyháza, nestled within the Bács-Kiskun county of Hungary, occupies a geographically significant position in the southern Great Hungarian Plain, or Alföld. Its coordinates (46.7050, 19.8500) place it squarely within a vast, relatively flat agricultural region characterized by fertile loess soils. The city’s terrain is predominantly level, with minimal elevation changes, a typical feature of the Alföld. This flatness, while beneficial for agriculture, can unfortunately exacerbate air quality issues, particularly during periods of temperature inversion. Kiskunfélegyháza is not directly adjacent to any major river, though it lies within the drainage basin of the Kiskunság, a wetland area to the southeast. This wetland, while providing ecological value, can contribute to localized humidity and fog formation, impacting pollutant dispersion. The surrounding landscape is overwhelmingly agricultural, dominated by extensive fields of wheat, corn, and sunflowers. This intensive farming practices, including fertilizer application and occasional burning of crop residues (though increasingly regulated), contribute to regional air pollution. The urban–rural gradient is gradual; the city blends seamlessly into the agricultural landscape, with residential areas often bordering farmland. The proximity to the larger industrial belt around Budapest, approximately 150km to the northwest, means that Kiskunfélegyháza can occasionally experience transported pollutants, though this is less frequent than localized emissions. The prevailing winds generally flow from the northwest, potentially carrying pollutants from more industrialized areas. The lack of significant topographical features limits natural air circulation, further influencing local air quality dynamics.

Kiskunfélegyháza’s air quality experiences a distinct seasonal cycle heavily influenced by meteorological conditions and agricultural practices. Spring (March-May) often sees elevated particulate matter levels due to the initial stages of agricultural activity, including fertilizer spreading and, historically, controlled burning of crop residues, though regulations have reduced this. Warm, calm days can lead to temperature inversions, trapping pollutants close to the ground. Summer (June-August) generally offers improved air quality due to higher temperatures and increased convective mixing, dispersing pollutants. However, prolonged dry spells can exacerbate dust pollution from agricultural fields. Autumn (September-November) presents a mixed picture. Harvest season brings increased dust and potential emissions from agricultural machinery. Cooler temperatures and calmer winds can again lead to inversions, particularly in the mornings and evenings. Winter (December-February) is typically the most challenging period. Cold, stable air masses frequently result in prolonged temperature inversions, trapping pollutants and leading to stagnant air conditions. Fog, common during winter months due to the region’s humidity, further restricts dispersion. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor exertion during these periods, especially on days with low visibility or a noticeable odour. Agricultural workers should utilize appropriate respiratory protection during peak activity periods. Public awareness campaigns regarding responsible agricultural practices and minimizing emissions from heating sources are crucial for mitigating winter air quality concerns. The gradual transition between seasons often brings unpredictable air quality fluctuations, requiring vigilance and adaptive strategies.