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Kovūrupalli, a small town in the Alluri Sitharama Raju district of Andhra Pradesh, India, sits at coordinates 14.7772°N, 79.9999°E. The terrain is largely characterized by the Eastern Ghats foothills, presenting a gently undulating landscape. The town’s elevation is relatively low, contributing to limited atmospheric dispersion of pollutants. Kovūrupalli is not directly adjacent to a major body of water, though smaller streams and tributaries of the Godavari River system are present in the surrounding areas. The regional economy is heavily reliant on agriculture, primarily rice cultivation, with increasing, though currently limited, small-scale industrial activity. This agricultural dominance introduces seasonal biomass burning, a significant contributor to particulate matter. The urban-rural gradient is pronounced; Kovūrupalli serves as a market town for surrounding villages, experiencing increased vehicular traffic during market days. This concentrated activity, combined with the local reliance on solid fuel for cooking and heating, impacts localised air quality. The surrounding landscape is dominated by deciduous forests, which, while providing some natural filtration, also contribute to seasonal pollen counts. The town’s position within a valley-like formation can exacerbate pollution episodes by trapping air masses, hindering pollutant dispersal. Understanding these geographical factors is crucial for assessing and mitigating air quality challenges in Kovūrupalli.

Kovūrupalli experiences a tropical climate with distinct wet and dry seasons, profoundly influencing air quality. The dry season, from November to May, sees consistently poorer air quality. Lower humidity and stagnant air masses allow pollutants from agricultural burning (post-harvest in early months) and domestic sources to accumulate. January to March are typically the worst months, with temperature inversions trapping pollutants near ground level. The onset of the southwest monsoon in June brings a temporary respite, with rainfall effectively washing away particulate matter. However, increased humidity can also foster mold growth, impacting respiratory health. September and October, following the monsoon’s retreat, see a resurgence of pollution as drying agricultural waste is burned. The post-monsoon period also experiences increased dust from drier conditions. Fog formation during cooler mornings in December and January can further exacerbate particulate matter concentrations. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit outdoor activity during the dry season and periods of high humidity. Monitoring local weather patterns and avoiding peak burning times are crucial for protecting health. The monsoon offers the most favourable conditions for outdoor activity, though vigilance regarding waterborne diseases is necessary.