Aul Air Quality Index (AQI)

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Aul, a municipality in Odisha’s Kendrapara district, occupies a unique geographic position in eastern India. Located at 20.6700°N latitude and 86.6400°E longitude, the city sits within the fertile deltaic plains formed by the Brahmani and Baitarani rivers as they approach the Bay of Bengal. The terrain is predominantly flat, typical of a coastal alluvial plain, with an elevation hovering around sea level, making it particularly vulnerable to cyclonic storm surges. Aul’s proximity to the coast – approximately 15km – introduces a constant influx of humid air and influences local weather patterns. The surrounding landscape is a mosaic of agricultural land, primarily rice paddies, interspersed with mangrove forests along the riverbanks and coastline. While Aul itself isn’t a major industrial hub, the broader Kendrapara district experiences some industrial activity related to prawn farming and processing, alongside smaller-scale brick kilns. The urban-rural gradient is pronounced; Aul serves as a market town for surrounding villages, resulting in increased vehicular traffic and localised pollution during peak hours. This flat topography and coastal location limit natural dispersion of pollutants, exacerbating air quality challenges, particularly during periods of calm weather.

Aul’s air quality follows a distinct seasonal pattern dictated by the monsoon and post-monsoon weather systems. The pre-monsoon months (March-May) witness a gradual deterioration in air quality due to rising temperatures and stagnant air, leading to increased dust and localised emissions from agricultural practices like crop residue burning. May is typically the worst month before the rains arrive. The southwest monsoon (June-September) brings significant relief, as heavy rainfall effectively washes away pollutants and increases humidity, suppressing dust. However, increased cloud cover can also contribute to temperature inversions, trapping pollutants near the ground. Post-monsoon (October-November) sees a resurgence of pollution as agricultural activities resume and cooler temperatures create stable atmospheric conditions. December-February are generally the months with the best air quality, benefiting from cooler temperatures and moderate winds. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during the pre-monsoon and post-monsoon periods. During the monsoon, while air is cleaner, the increased humidity can exacerbate respiratory issues. Monitoring local weather forecasts and avoiding peak traffic hours are crucial for mitigating exposure.