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Ezhamkulam, nestled in the Alappuzha district of Kerala, India, occupies a geographically significant position within the state’s coastal belt. Located at approximately 9.1333° N latitude and 76.7667° E longitude, the town’s terrain is predominantly low-lying, characteristic of the Kerala plains. Its proximity to the Arabian Sea, roughly 10 kilometers to the west, exerts a considerable influence on local climate and, consequently, air quality. The surrounding landscape is a mosaic of lush paddy fields, coconut groves, and smaller settlements, representing a gradual urban-rural gradient. Ezhamkulam itself exhibits a modest urban character, primarily a residential area with some small-scale commercial activity, lacking large industrial zones within its immediate vicinity. However, the broader Alappuzha district hosts several industrial units, including those related to coir processing and fisheries, which can contribute to regional air pollution episodes. The elevation is minimal, rarely exceeding 15 meters above sea level, which can exacerbate the trapping of pollutants, particularly during periods of stagnant air. The backwaters, a defining feature of the region, while ecologically vital, can also contribute to localized humidity and influence the dispersion of airborne particles. Agricultural practices, particularly the burning of crop residue after harvest, represent a potential source of seasonal air pollution, though generally on a smaller scale compared to more industrialized regions. The town’s location within a humid tropical climate zone further complicates air quality dynamics, impacting pollutant behaviour and dispersion patterns.

Ezhamkulam’s air quality experiences a distinct seasonal rhythm dictated by Kerala’s monsoon climate. The southwest monsoon, typically spanning from June to September, brings substantial rainfall and strong winds, effectively flushing out accumulated pollutants and generally improving air quality. This period is often the most favourable for outdoor activities, although heavy rainfall can occasionally reduce visibility. The pre-monsoon season (March-May) presents a contrasting scenario. Rising temperatures and decreasing rainfall lead to stagnant air conditions, increasing the likelihood of pollutant accumulation. Temperature inversions, common during this period, trap pollutants near the ground, potentially impacting air quality. Agricultural burning, a practice sometimes employed after the harvest season, can further exacerbate this issue. The post-monsoon season (October-November) sees a gradual decrease in rainfall and a return to warmer temperatures, with air quality generally remaining moderate. Fog, particularly in the mornings, can also contribute to localized pollutant concentrations. During the dry season, the humidity decreases, and the air becomes drier, which can irritate respiratory systems. Sensitive groups, including children, the elderly, and individuals with pre-existing respiratory conditions, should exercise caution during the pre-monsoon months, limiting strenuous outdoor activities during peak pollution periods. Maintaining indoor air quality through ventilation and air purification can also be beneficial. The monsoon months offer a respite, but even then, individuals with sensitivities should monitor local conditions and take precautions if necessary. Overall, awareness of seasonal patterns and proactive measures are key to mitigating potential air quality impacts.