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Pāiker, nestled in the Purba Bardhaman district of West Bengal, India, occupies a geographically significant position within the Ganges Delta region. Located at approximately 24.4388° N, 87.9112° E, the city’s terrain is predominantly flat, characteristic of the fertile alluvial plains formed by the Ganges River and its tributaries. The surrounding landscape is a mosaic of agricultural fields – primarily rice paddies and jute cultivation – interspersed with small villages and scattered groves of mango and palm trees. Pāiker’s proximity to the Damodar River, a major east-flowing river, influences local microclimates and contributes to the region’s high humidity. The urban–rural gradient transitions rapidly; the city itself is a small, localized settlement, quickly giving way to the expansive agricultural hinterland. While not directly adjacent to a major industrial belt, Pāiker’s location within West Bengal places it within reach of industrial zones concentrated around Kolkata and Durgapur, which can contribute to regional air pollution transport. The elevation is low, generally below 30 meters above sea level, which can exacerbate the trapping of pollutants, particularly during periods of stagnant air. The flat topography limits natural ventilation, and the prevalence of agricultural burning during harvest seasons significantly impacts local air quality. The deltaic nature of the region also means the soil is prone to dust generation, further contributing to particulate matter levels. The surrounding landscape, while visually appealing, presents unique challenges for air quality management due to agricultural practices and regional industrial influences.

Pāiker’s air quality follows a distinct seasonal pattern dictated by the region’s monsoon climate. The monsoon season, typically spanning June to September, brings relief from accumulated pollutants as heavy rainfall washes away particulate matter and strong winds disperse gaseous pollutants. However, the pre-monsoon period (March-May) often witnesses a significant deterioration in air quality. Rising temperatures and decreasing humidity create stable atmospheric conditions, frequently leading to temperature inversions where cooler air is trapped beneath a layer of warmer air, preventing vertical mixing and concentrating pollutants near the ground. Agricultural burning, a common practice during this period to clear fields for the Kharif (summer) crop, releases substantial amounts of smoke and particulate matter. The post-monsoon season (October-November) can also experience periods of poor air quality due to cooler temperatures and calmer winds, although generally less severe than the pre-monsoon. Winter months (December-February) are characterized by fog, which further reduces visibility and traps pollutants, particularly in the mornings. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should limit outdoor activity during the pre-monsoon and winter months, especially during periods of heavy agricultural burning or dense fog. Maintaining indoor air quality through ventilation and air purifiers is also advisable. The monsoon season offers the most favourable conditions for outdoor activities, although occasional heavy rainfall can still impact visibility and air quality.