Shankarpur Khawās, nestled in the fertile plains of Bihar, India (25.2016° N, 87.1496° E), occupies a geographically significant position within the Gangetic Basin. The city’s terrain is predominantly flat, characteristic of the Indo-Gangetic Plain, with an average elevation of approximately 35 meters above sea level. This low elevation contributes to a tendency for stagnant air conditions, particularly during cooler months, exacerbating air quality challenges. Shankarpur Khawās is surrounded by a mosaic of agricultural land, primarily dedicated to rice and maize cultivation, interspersed with smaller villages and rural settlements, creating a gradual urban-rural gradient. The proximity to the Ganges River, though not immediately adjacent, influences regional weather patterns and humidity levels, which can impact pollutant dispersion. To the west, the landscape gradually rises towards the Chota Nagpur Plateau, a geological feature that can sometimes influence wind patterns and pollutant transport. The region's agricultural practices, including the burning of crop residue after harvest, are a significant contributor to seasonal air pollution. Furthermore, the city’s location within a broader industrial belt, though not directly hosting heavy industry, experiences indirect impacts from emissions originating from nearby manufacturing hubs. The flat topography and prevailing wind patterns often lead to pollutants accumulating within the local atmosphere, particularly when coupled with temperature inversions. The surrounding landscape, dominated by agriculture, plays a crucial role in both the sources and the dispersion of air pollutants affecting Shankarpur Khawās.

Shankarpur Khawās experiences a distinct seasonal cycle that profoundly impacts its air quality. The dry season, typically spanning from October to May, presents the most significant air quality concerns. During these months, lower temperatures frequently lead to temperature inversions, trapping pollutants close to the ground. Agricultural burning, a common practice following the harvest of rice and other crops, releases substantial quantities of particulate matter and gases into the atmosphere, dramatically worsening conditions. November and December often see the poorest air quality due to a combination of cooler temperatures, stagnant air, and persistent agricultural fires. The monsoon season, from June to September, brings relief as increased rainfall and stronger winds naturally cleanse the air, dispersing pollutants. However, even during the monsoon, humidity can trap certain pollutants, and localized flooding can release methane from agricultural lands. The transitional periods of spring (March-April) and autumn (September-October) offer relatively improved air quality, though dust storms and occasional agricultural burning can still impact conditions. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly in November and December, limiting outdoor activities during peak pollution periods. Maintaining indoor air quality through ventilation and air purifiers is also advisable. The intensity of the monsoon and the extent of agricultural burning significantly influence the overall annual air quality profile of Shankarpur Khawās, making it a highly variable environment.