Soriyankuppam Air Quality Index (AQI)

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Soriyankuppam, a town in the Union Territory of Puducherry but geographically and administratively closely linked to Tamil Nadu, presents a unique air quality challenge shaped by its coastal location and surrounding landscape. Situated at coordinates 11.7870°N, 79.7310°E, the town lies within the fertile Cuddalore district, a region dominated by agricultural lands, particularly paddy cultivation. The terrain is generally flat, typical of the Coromandel Coast, with a gentle slope towards the Bay of Bengal, approximately 5 kilometers east. This proximity to the sea introduces a constant influx of sea breeze, which can both disperse and concentrate pollutants depending on atmospheric conditions. While not a major industrial hub itself, Soriyankuppam is situated within reach of industrial areas around Cuddalore and Pondicherry, contributing to regional background pollution. The urban-rural gradient is pronounced; the town itself is relatively small with a population of around 36,983, surrounded by extensive agricultural fields and smaller villages. This mix creates localized emission sources from agricultural practices (burning of crop residue) alongside potential transport of pollutants from larger industrial zones. The lack of significant topographical features limits natural ventilation, potentially exacerbating pollution episodes. Understanding these geographical factors is crucial for effective air quality management in Soriyankuppam.

Soriyankuppam experiences a tropical climate, with air quality fluctuating significantly between the wet and dry seasons. The northeast monsoon, dominant from October to December, brings substantial rainfall, effectively washing away particulate matter and improving air quality. This period, particularly November and December, generally offers the most favourable conditions for outdoor activity. However, increased humidity can also contribute to the formation of mould and allergens. The dry season, from January to May, sees a gradual deterioration in air quality. Rising temperatures and stagnant air masses lead to the build-up of pollutants, especially dust and agricultural smoke from post-harvest burning. March and April are typically the worst months. The southwest monsoon, arriving in June, provides temporary relief, but is less impactful than the northeast monsoon. During the transition months of September and October, retreating monsoon winds can carry pollutants from inland areas. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor exposure during the dry season and be mindful of allergen levels during the wetter months. Temperature inversions, common during the cooler months, can trap pollutants near the ground, worsening air quality locally.