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Ātharga, nestled in the northern reaches of Karnataka, India, occupies a geographically significant position within the Deccan Plateau. Located at approximately 16.9875° N, 75.8863° E, the city’s terrain is characterized by gently undulating hills and valleys, typical of the region's basaltic landscape. Its elevation, though modest, contributes to localized microclimates and influences air circulation patterns. Ātharga sits within a transitional zone, bordering both agricultural lands and the periphery of larger industrial belts concentrated further east towards the plains. The surrounding landscape is predominantly rural, a mosaic of cultivated fields (primarily sugarcane and pulses) interspersed with scrubland and scattered deciduous forests. This urban–rural gradient means agricultural practices, including seasonal burning of crop residue, can significantly impact local air quality. While not directly adjacent to a major river, Ātharga benefits from proximity to smaller seasonal streams and groundwater resources, which can influence humidity levels and, consequently, pollutant dispersion. The city’s relatively small size (population 11,365) means its urban footprint is contained, but increasing vehicular traffic and limited industrial activity within the immediate vicinity still pose challenges. The plateau’s topography, combined with the prevailing wind patterns, can sometimes trap pollutants, particularly during periods of atmospheric stability, creating localized air quality concerns. The regional climate, a semi-arid tropical type, further complicates the situation, with hot, dry summers and a distinct monsoon season.

Ātharga’s air quality experiences a distinct seasonal cycle dictated by the region’s tropical climate. The dry season, spanning roughly March to May, is typically characterized by high temperatures and low humidity. This period often sees a noticeable increase in particulate matter as dust storms are common, and agricultural burning, though regulated, can still occur. Temperature inversions, where cooler air becomes trapped beneath a layer of warmer air, are more frequent during these months, hindering vertical mixing and exacerbating pollution. The monsoon season, from June to September, brings relief with increased rainfall, which naturally washes pollutants from the atmosphere. However, heavy rainfall can also lead to increased dampness and the release of volatile organic compounds (VOCs) from decaying vegetation. October and November represent a transitional period, with decreasing rainfall and gradually increasing temperatures. Fog, common during these months, can trap pollutants near the ground, leading to temporary reductions in visibility and localized air quality degradation. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of dust storms or stagnant air. Outdoor activities are generally more favorable during the monsoon months, although vigilance regarding potential VOC exposure is advised. The post-monsoon period requires careful monitoring due to the potential for fog-related pollution spikes. Agricultural practices and their associated emissions are a key factor influencing air quality throughout the year, demanding sustainable farming methods to mitigate their impact.