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Khargāpur, nestled within the state of Madhya Pradesh, India, occupies a geographically significant position within the Narmada River valley. Located at approximately 24.8230° N latitude and 79.1440° E longitude, the city’s terrain is predominantly characterized by gently undulating plains, typical of the Indo-Gangetic Plain’s southern fringe. The elevation is relatively low, averaging around 275 meters above sea level, contributing to a tendency for pollutants to accumulate, particularly during periods of atmospheric stability. The surrounding landscape is a mosaic of agricultural fields – primarily cultivating wheat, pulses, and oilseeds – interspersed with pockets of deciduous forests. This agricultural activity, while vital to the regional economy, can contribute to seasonal particulate matter pollution through crop residue burning, especially during the post-harvest period. Khargāpur’s proximity to the Narmada River, though providing a crucial water source, doesn't significantly influence air quality due to the distance and prevailing wind patterns. The urban–rural gradient transitions relatively smoothly, with smaller villages and agricultural lands immediately bordering the city limits. While not directly adjacent to major industrial belts, Khargāpur serves as a regional trading hub, and increasing vehicular traffic, coupled with localized brick kilns and small-scale industries, contributes to localized air pollution. The flat topography and limited natural ventilation exacerbate the challenges in dispersing pollutants, making the city susceptible to episodes of poor air quality, particularly during cooler months when temperature inversions are more frequent.

Khargāpur’s air quality follows a distinct seasonal pattern dictated by the interplay of meteorological factors and regional activities. The pre-monsoon season (March-May) typically witnesses the poorest air quality. Rising temperatures and decreasing wind speeds create stable atmospheric conditions, often leading to temperature inversions that trap pollutants near the ground. Agricultural burning of crop residue after the harvest season significantly elevates particulate matter concentrations during this period. The monsoon season (June-September) brings a welcome respite, with increased rainfall and stronger winds effectively flushing out pollutants. Humidity also rises, which can affect respiratory comfort. The post-monsoon season (October-November) sees a gradual return to less favourable conditions. While rainfall decreases, the winds remain relatively strong, but the accumulation of pollutants from localized sources begins to build. Winter (December-February) is characterized by cold, calm conditions and frequent fog, which further restricts atmospheric mixing and traps pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor exertion during the pre-monsoon and winter months. During the monsoon, while air quality generally improves, high humidity can still exacerbate respiratory issues for some. It’s advisable to monitor local air quality reports and adjust outdoor activities accordingly, prioritizing periods of higher wind speeds and clearer skies. Maintaining indoor air quality through ventilation and air purification can also provide a degree of protection.