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Lingsugūr, nestled within the Karnataka state of India at coordinates 16.1700°N, 76.5200°E, presents a unique geographic setting influencing its air quality. The town, home to approximately 34,932 residents, is situated in the northern part of Karnataka, within the Deccan Plateau. This plateau landscape is characterised by gently undulating terrain, interspersed with rocky outcrops and small hills. Lingsugūr’s elevation, around 650 meters above sea level, contributes to cooler temperatures compared to lower-lying regions, but also influences atmospheric stability. The surrounding landscape is predominantly agricultural, with significant cultivation of crops like sugarcane, cotton, and pulses. This agricultural activity, while vital to the local economy, introduces potential sources of particulate matter through farming practices and biomass burning. The town isn’t directly adjacent to major industrial belts, but regional industrial activity in nearby districts can contribute to long-range pollutant transport. The urban-rural gradient is relatively sharp, with Lingsugūr serving as a market town for surrounding villages. The lack of substantial natural windbreaks and the plateau’s tendency to trap air masses can exacerbate pollution episodes, particularly during calmer weather conditions. Proximity to smaller rivers and streams doesn’t significantly mitigate air pollution due to limited dispersion capacity.

Lingsugūr experiences a tropical climate with distinct wet and dry seasons heavily influencing air quality. The dry season, roughly from November to May, sees consistently poorer air quality. Lower humidity and stable atmospheric conditions during these months trap pollutants emitted from agricultural activities – post-harvest burning of crop residue is a major contributor – and vehicular traffic. January and February are typically the worst months, with temperature inversions frequently occurring, preventing vertical mixing and concentrating pollutants near the ground. The monsoon season, arriving in June and lasting until October, brings significant relief. Heavy rainfall effectively washes away particulate matter, and increased wind speeds aid in dispersion. However, increased humidity can also promote the formation of secondary pollutants. August and September, while generally cleaner, can experience localised pollution spikes due to stagnant air following heavy rainfall. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exposure during the dry season, particularly January-February. During the monsoon, while overall air quality improves, mould growth and waterborne diseases become concerns. Monitoring local weather patterns and avoiding peak traffic hours are advisable year-round.