Nakūr, a small town nestled in the western reaches of Uttar Pradesh, India, occupies a geographically significant position within the broader Indo-Gangetic Plain. Located at approximately 29.9189° N, 77.3044° E, the town’s terrain is predominantly flat, characteristic of the alluvial plains formed by the Yamuna River and its tributaries. The surrounding landscape is a mosaic of agricultural fields – primarily wheat and sugarcane – interspersed with pockets of scrubland and scattered villages, creating a gradual urban-rural gradient. While Nakūr itself is relatively small, its proximity to larger urban centers like Agra (approximately 60 km to the southeast) and Mathura (around 45 km to the south) means it is influenced by their industrial and transportation activities. The elevation is low, averaging around 170 meters above sea level, which contributes to stagnant air conditions, particularly during cooler months. The absence of significant natural barriers, such as hills or mountains, further exacerbates this issue, limiting the dispersion of pollutants. The region's climate is hot and dry for much of the year, with a monsoon season bringing brief relief. The flat topography and intensive agricultural practices, including the burning of crop residue after harvest, significantly impact the local air quality. The town’s location within a densely populated and agriculturally intensive region makes it particularly vulnerable to regional pollution transport and localized emissions.

Nakūr’s air quality follows a distinct seasonal pattern dictated by the region’s climate and agricultural practices. The winter months (November to February) consistently present the most challenging conditions. Cold temperatures lead to frequent temperature inversions, trapping pollutants close to the ground and resulting in prolonged periods of poor visibility and elevated particulate matter. Agricultural burning, a common practice after the harvest of crops like wheat and mustard, intensifies during this period, adding significantly to the pollution load. Fog, a frequent occurrence in winter, further restricts atmospheric mixing and exacerbates the problem. Spring (March-May) brings a slight improvement as temperatures rise and winds increase, aiding in pollutant dispersal, though dust storms remain a concern. The monsoon season (June-September) offers a period of relative respite, with rainfall washing away pollutants and increased wind speeds promoting ventilation. However, heavy rainfall can also lead to waterlogging and the release of methane from agricultural lands. The post-monsoon period (October) sees a gradual deterioration in air quality as temperatures drop and agricultural burning resumes. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the winter months, limiting outdoor activities and wearing appropriate masks. During the peak burning season (November-December), minimizing exposure is strongly advised. The transition months of spring and autumn offer more favourable conditions for outdoor pursuits, but vigilance regarding dust and pollen levels is still recommended.