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Kadamakudi, a coastal village in Kerala, India (10.0652°N, 76.2451°E), is situated within the Kollam district, nestled along the Arabian Sea. With a population of approximately 15,823, the area is characterised by a low-lying, relatively flat terrain typical of the Kerala coastline. The landscape is dominated by coconut groves, paddy fields, and a network of backwaters – a defining feature of this region. Kadamakudi’s proximity to the sea significantly influences its climate and, consequently, its air quality. The prevailing winds, particularly during the monsoon seasons, carry moisture and can disperse pollutants, but also contribute to humidity which can trap them. While not a major industrial hub itself, Kadamakudi lies within reach of industrial areas further north along the coast, and agricultural practices, including fertilizer use, contribute to localised emissions. The urban-rural gradient is pronounced; Kadamakudi retains a largely rural character, but increasing connectivity and population density are introducing elements of urbanisation. This transition, coupled with the coastal location, creates a unique set of air quality challenges. The backwaters, while ecologically vital, can also limit air circulation in certain areas, exacerbating localised pollution events. The sandy soil composition also contributes to dust resuspension during drier periods.

Kadamakudi experiences a tropical climate with distinct wet and dry seasons, profoundly impacting air quality. The southwest monsoon (June-September) brings heavy rainfall, which generally *improves* air quality by washing away particulate matter. However, increased humidity can also trap pollutants near the ground. October-November sees a transition period with calmer winds and potential for temperature inversions, leading to localised build-up of pollutants from agricultural burning and domestic sources. The dry season (December-February) is typically the period of poorest air quality. Lower rainfall and stronger winds can stir up dust from roads and construction, while cooler temperatures can exacerbate temperature inversions. March-May brings increasing heat and humidity, with a gradual build-up of pollutants before the monsoon arrives. Sensitive individuals – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during the dry season, particularly in March and April. During the monsoon, while air is cleaner, the increased humidity can trigger respiratory issues. Monitoring local weather patterns and avoiding peak traffic hours are advisable year-round. Fog, common during the cooler months, can also trap pollutants, reducing visibility and worsening air quality.