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Kaspi, nestled within the Shida Kartli region of Georgia, occupies a strategically important, yet geographically complex, position in the eastern part of the country. Located at coordinates 41.9244, 44.4189, the city sits within the Kura-Aragvi Plain, a relatively low-lying area between the Greater and Lesser Caucasus mountains. This plain is a crucial agricultural zone, primarily focused on grain and viticulture, influencing local air quality through seasonal agricultural practices like burning of crop residue. The city’s elevation is approximately 530 meters above sea level, contributing to a temperate climate but also potentially trapping pollutants during temperature inversions. The Kura River flows nearby, offering a potential, though limited, natural ventilation corridor. Kaspi isn’t a major industrial hub, but smaller-scale processing of agricultural products and some light manufacturing contribute to localised emissions. The urban-rural gradient is quite sharp; the city itself is relatively compact, quickly transitioning to farmland and then mountainous terrain. This proximity to agricultural land means Kaspi’s air quality is heavily influenced by regional weather patterns and farming activities, alongside domestic heating during colder months. The surrounding hills can impede air circulation, exacerbating pollution episodes, particularly during calm weather conditions. Understanding this interplay of terrain, agriculture, and limited industrial activity is crucial for assessing Kaspi’s air quality challenges.

Kaspi’s air quality follows a distinct seasonal pattern. Spring (March-May) sees a gradual improvement after the winter heating season, but agricultural burning begins, introducing particulate matter into the air. Winds are variable, sometimes offering relief, but temperature inversions can trap pollutants in the valley. Summer (June-August) generally offers the cleanest air, with prevailing winds dispersing emissions and higher temperatures promoting atmospheric mixing. However, dry conditions can lead to dust from agricultural fields. Autumn (September-November) is a period of increasing concern. The harvest season brings widespread burning of agricultural waste, significantly degrading air quality. Calm, stable weather patterns become more frequent, trapping pollutants. November often sees the first significant heating demand, adding to the pollution burden. Winter (December-February) is typically the worst period for air quality. Reliance on solid fuels for heating – wood and coal – is high, leading to elevated levels of particulate matter and sulfur dioxide. Frequent temperature inversions, common in valleys, exacerbate the problem. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during autumn and winter, particularly on calm, cold days. Monitoring weather forecasts and avoiding strenuous activity when pollution is visibly high is advisable.