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Daulatnagar, West Bengal, occupies a geographically significant position within the Ganges Delta, a vast alluvial plain shaped by the mighty Ganges River and its tributaries. Located at approximately 25.3216° N, 87.8443° E, the city’s terrain is predominantly flat, characteristic of the deltaic landscape, with elevations rarely exceeding 10 meters above sea level. This low-lying topography contributes to poor air circulation, particularly during periods of stagnant weather. Daulatnagar’s proximity to the Hooghly River, a distributary of the Ganges, influences local humidity and temperature patterns, which in turn impact pollutant dispersion. The surrounding landscape is a mosaic of agricultural fields – primarily rice and jute cultivation – interspersed with small villages and pockets of industrial activity. The city sits within a gradual urban–rural gradient, transitioning from the denser urban fabric of nearby industrial zones to the more agrarian character of the wider district. Significant industrial belts, including those focused on jute processing and related industries, are located within a reasonable radius, contributing to localized pollution sources. The deltaic soil, while fertile, can also be prone to dust generation, especially during the dry season. The flat terrain and prevailing wind patterns often result in pollutants accumulating rather than being effectively dispersed, creating conditions conducive to poorer air quality. The region's dense population and increasing vehicular traffic further exacerbate these challenges, making Daulatnagar's air quality particularly sensitive to regional and local emissions.

Daulatnagar’s air quality experiences a distinct seasonal cycle 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, increased humidity can trap certain pollutants closer to the ground. The pre-monsoon months (March-May) are often the most challenging, characterized by high temperatures, low humidity, and frequent temperature inversions. These inversions trap pollutants near the surface, leading to a build-up of smog and a noticeable decline in air quality. Agricultural burning, a common practice in the surrounding rural areas to clear fields for the next planting season, significantly contributes to particulate pollution during this period. The post-monsoon season (October-November) sees a gradual improvement as rainfall decreases, but lingering agricultural smoke and cooler temperatures can still lead to localized pollution episodes. Winter months (December-February) are often marked by fog, which further restricts air movement and traps pollutants, creating conditions that are particularly detrimental to respiratory health. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the pre-monsoon and winter months, limiting outdoor activity during peak pollution periods and utilizing air purifiers when possible. Maintaining indoor air quality is crucial during these times, alongside regular monitoring of local air quality reports.