Alengād Air Quality Index (AQI)

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Alengād, a municipality nestled within the verdant landscape of Kerala, India, occupies a relatively low-lying position at approximately 10.1000°N, 76.3000°E. With a population of around 31,870, the town’s geography is profoundly shaped by its coastal proximity and the broader features of the Malabar Coast. The terrain is largely flat, characteristic of the coastal plains of Kerala, gradually rising inland towards the Western Ghats. This flatness contributes to limited natural dispersion of pollutants. Alengād benefits from the moderating influence of the Arabian Sea, but this also means high humidity and potential for stagnant air masses. The surrounding landscape is a mosaic of coconut plantations, paddy fields, and increasingly, residential and commercial development. While not a major industrial hub itself, Alengād is situated within a region containing smaller-scale industrial activity and brick kilns, contributing to particulate matter. The urban-rural gradient is relatively sharp, with agricultural land immediately bordering the town. This proximity means seasonal agricultural burning can impact local air quality. The dense vegetation offers some natural filtration, but the overall effect is complex, as biomass burning releases significant pollutants. The town’s location makes it susceptible to sea breezes, which can either dilute or concentrate pollutants depending on prevailing weather patterns.

Alengād experiences a tropical climate, with distinct wet and dry seasons heavily influencing air quality. The southwest monsoon, typically arriving in June and lasting until September, initially offers a respite from pollution as heavy rainfall washes particulate matter from the atmosphere. However, increased humidity can also trap pollutants closer to the ground. October and November see a transition period with calmer winds and cooler temperatures, often leading to temperature inversions – a key factor in trapping pollutants, particularly in the mornings. This period can see a noticeable increase in respiratory complaints. The dry season, from December to February, is generally considered the best time for outdoor activity, with clearer skies and better ventilation. However, increased use of domestic heating and potential agricultural burning can still contribute to localised pollution. March to May brings rising temperatures and drier conditions, exacerbating dust and particulate matter. This is often the period of highest pollution, particularly if there is increased construction activity or waste burning. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit strenuous outdoor activity during these months and consider using masks when pollution levels are elevated. Monitoring local conditions is crucial.