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Qarataū, nestled within Zhambyl Province in Kazakhstan, occupies a unique geographic position at coordinates 43.1667° N, 70.4500° E. The city’s name, meaning ‘black mountains’ in Kazakh, hints at its defining feature: the nearby Qarataū mountain range, a low-lying extension of the Tian Shan system. This terrain significantly influences local air quality. Qarataū itself sits at an elevation of approximately 1,000 meters, contributing to cooler temperatures and potential for temperature inversions. The surrounding landscape is characterised by semi-arid steppe, transitioning into more rugged mountainous areas to the south and east. While no major bodies of water are immediately adjacent, the city lies within the drainage basin of several smaller rivers originating in the Qarataū range. The regional economy is heavily reliant on agriculture, particularly livestock farming, and some localised mineral extraction. The urban-rural gradient is relatively sharp; Qarataū serves as a regional centre for surrounding agricultural communities. Dust from agricultural activities and potential emissions from small-scale industrial operations, combined with the topographic constraints of the valley location, can contribute to localised air pollution events. The prevailing winds, generally from the northwest, can transport pollutants across the city, impacting air quality depending on source locations.

Qarataū experiences a continental climate with significant seasonal variations impacting air quality. Winters (November to February) are cold and dry, often with stable atmospheric conditions leading to temperature inversions that trap pollutants near the ground, particularly from residential heating using coal or wood. January and February typically see the poorest air quality. Spring (March to May) brings increasing temperatures and occasional dust storms as the ground thaws and agricultural activity intensifies, temporarily elevating particulate matter. Summer (June to August) generally offers the cleanest air, with prevailing winds dispersing pollutants and rainfall acting as a natural scrubber. However, prolonged dry spells can still lead to dust accumulation. Autumn (September to November) sees a gradual deterioration in air quality as temperatures fall and heating demand increases. October is often a transitional month with moderate pollution levels. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter and periods of dust storms. Monitoring wind direction is crucial; pollutants tend to accumulate on the leeward side of the city. Local meteorological patterns, including infrequent fog events, can exacerbate pollution episodes.