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Konnūr, a small town in Karnataka, India, is situated at coordinates 16.2013°N, 74.7436°E, nestled within the undulating terrain of the Western Ghats foothills. With a population of approximately 27,474, Konnūr’s geography significantly influences its air quality. The town lies at an elevation of roughly 750-800 meters, contributing to cooler temperatures and potential for temperature inversions, trapping pollutants. The surrounding landscape is predominantly agricultural, characterized by paddy fields, coconut groves, and spice plantations. The Malaprabha River flows nearby, offering some natural dispersion, but also potentially contributing to humidity and localised fog formation. Konnūr isn’t a major industrial hub, but regional industrial activity in Hubballi-Dharwad, approximately 80km to the east, can contribute to background pollution levels carried by prevailing winds. The urban-rural gradient is pronounced; Konnūr itself is relatively low-density, but surrounding villages contribute to biomass burning during agricultural seasons. Dust from unpaved roads and construction activities also adds to particulate matter. The town’s position within a valley can exacerbate pollution build-up, limiting air circulation and increasing pollutant concentrations, particularly during calmer weather conditions. Understanding this interplay of topography, land use, and regional influences is crucial for assessing and mitigating Konnūr’s air quality challenges.

Konnūr experiences a distinct wet and dry season, heavily influenced by the Southwest Monsoon. Air quality generally improves dramatically during the monsoon months (June-September) as rainfall effectively washes away particulate matter and increased humidity suppresses dust. However, high humidity can also foster mould growth, potentially impacting respiratory health. The post-monsoon period (October-November) sees a gradual deterioration in air quality as agricultural burning increases following the harvest. This is a period to be cautious about outdoor activity, especially for those with pre-existing respiratory conditions. Winter (December-February) often brings calmer winds and temperature inversions, trapping pollutants near the ground, leading to increased concentrations of particulate matter and potentially smoke from household heating. February and March are typically the worst months. The pre-monsoon season (March-May) is characterised by rising temperatures and dry conditions, exacerbating dust pollution and increasing the risk of wildfires. Sensitive groups – children, the elderly, and those with respiratory illnesses – should limit strenuous outdoor activity during these periods. Monitoring wind patterns and avoiding peak pollution times are advisable throughout the year.