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Volnovakha, situated in the Donetska Oblast of eastern Ukraine, occupies a geographically significant position within the Donbas region. Located at coordinates 47.6022° N, 37.4919° E, the city rests on gently undulating plains characteristic of the Azov Upland. The terrain is primarily composed of chernozem (black earth) soils, highly fertile and historically supporting extensive agricultural activity. This agricultural landscape, dominated by grain and sunflower cultivation, surrounds the city, contributing to seasonal particulate matter from harvesting and soil disturbance. Volnovakha’s elevation is approximately 180 meters above sea level, influencing local wind patterns and potential for temperature inversions. The proximity to the Mokri Yaly River, while providing a water source, also creates localized humidity which can trap pollutants. Historically, the region has been a key industrial belt, focused on coal mining and metallurgy, though Volnovakha itself is less intensely industrialised than some neighbouring cities. The urban-rural gradient is relatively sharp, with agricultural lands immediately bordering the city limits. This combination of factors – agricultural practices, historical industrial influence, and relatively flat terrain – creates a complex environment impacting air quality in Volnovakha, making it susceptible to both local and regional pollution sources. The ongoing conflict in the region has dramatically altered land use and industrial activity, adding further complexity to the air quality profile.

Volnovakha experiences a continental climate, resulting in distinct seasonal air quality patterns. Spring (March-May) sees a rise in particulate matter from agricultural preparations – plowing and burning of stubble – coupled with dust storms common across the Donbas region. Winds from the south and southwest can carry pollutants from larger industrial centres. Summer (June-August) generally offers improved air quality due to rainfall washing away pollutants and increased atmospheric mixing, though high temperatures can promote ozone formation. However, dry spells can quickly reverse this. Autumn (September-November) is often marked by stagnant air masses and temperature inversions, trapping pollutants near the ground, particularly smoke from residential heating as temperatures drop. This is a period of increased respiratory risk. Winter (December-February) presents the most challenging conditions. Heavy reliance on coal and wood for heating, combined with frequent temperature inversions and low wind speeds, leads to significant concentrations of particulate matter and sulfur dioxide. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit outdoor exposure during these months. February and March are particularly problematic due to the combined effects of winter heating and spring agricultural practices. Avoiding strenuous outdoor activity during calm, cold periods is advisable.