Kāttupputtūr Air Quality Index (AQI)

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Kāttupputtūr, nestled in the Vellore district of Tamil Nadu, India, occupies a geographically significant position within the broader Kaveri Delta region. Located at approximately 10.98° N latitude and 78.23° E longitude, the town sits at an elevation of roughly 170 meters above sea level, contributing to a relatively moderate climate. The surrounding landscape is characterized by a gradual transition from the undulating hills of the Eastern Ghats to the fertile plains of the delta. This terrain influences local wind patterns, often channeling breezes from the east, which can both disperse and concentrate pollutants depending on atmospheric stability. Kāttupputtūr’s proximity to the Palar River, though not directly adjacent, influences local humidity and temperature, impacting the behaviour of particulate matter. The urban–rural gradient around Kāttupputtūr is relatively sharp; the town itself is a growing urban centre, while the immediate surroundings are predominantly agricultural, with rice cultivation being a dominant feature. This agricultural activity, while vital to the regional economy, can contribute to seasonal air pollution through the burning of crop residue. Further afield, the industrial belt around Ranipet, known for its tanneries and metal finishing industries, represents a potential source of regional air pollution that can occasionally impact Kāttupputtūr, particularly during periods of stagnant air. The town’s location, therefore, presents a complex interplay of natural and anthropogenic factors affecting its air quality.

Kāttupputtūr experiences a tropical wet-dry climate, dictating a distinct seasonal narrative for air quality. The monsoon season, typically spanning June to September, brings relief from accumulated pollutants as frequent rainfall washes away particulate matter and strong winds disperse gaseous pollutants. However, the pre-monsoon period (March-May) often witnesses a concerning rise in air pollution. High temperatures and reduced rainfall create stable atmospheric conditions, leading to temperature inversions where cooler air is trapped beneath a layer of warmer air, preventing vertical mixing and trapping pollutants near the ground. Agricultural burning, prevalent during this period as farmers clear fields for the next planting season, significantly exacerbates the problem. The post-monsoon season (October-November) sees a gradual improvement as winds pick up and temperatures begin to cool, though lingering agricultural smoke can still be a factor. Winter months (December-February) are generally the most favourable for outdoor activities, with cooler temperatures and more frequent wind dispersal. However, occasional fog, particularly in December and January, can trap pollutants and reduce visibility. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the pre-monsoon period and avoid prolonged outdoor exposure when fog is present. Maintaining indoor air quality through ventilation and air purifiers is also advisable during these periods. The interplay of monsoon patterns, agricultural practices, and temperature fluctuations creates a dynamic air quality profile throughout the year in Kāttupputtūr.