Jagatpur Air Quality Index (AQI)

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Jagatpur, situated in the Chattogram district of Bangladesh (coordinates 23.6075° N, 90.7660° E), occupies a geographically complex position within the broader deltaic landscape. The city’s terrain is predominantly low-lying, characteristic of the Bengal Delta, with elevations rarely exceeding 10 meters above sea level. This flatness contributes to poor air circulation, particularly during periods of stagnant weather. Jagatpur lies within a region heavily influenced by the Karnaphuli River, a major waterway that provides both transportation and a source of water for agriculture and industry. The surrounding landscape is a mosaic of agricultural fields – primarily rice paddies and vegetable farms – interspersed with pockets of dense tropical vegetation. To the west, the Chittagong Hill Tracts rise abruptly, creating a barrier that can trap pollutants and influence prevailing wind patterns. The proximity to the port city of Chattogram, a significant industrial hub, is a crucial factor. Industrial emissions from the port and associated manufacturing belts, including textiles, ship breaking, and cement production, frequently impact Jagatpur’s air quality. The urban–rural gradient is relatively sharp; Jagatpur itself is a smaller urban centre, but its close connection to Chattogram means it experiences the spillover effects of a much larger metropolitan area. The deltaic soil composition, often rich in clay, can also contribute to dust resuspension, further exacerbating air pollution, especially during the dry season. The flat topography and riverine environment combine to create conditions where pollutants can linger and accumulate.

Jagatpur’s air quality follows a distinct seasonal pattern dictated by the region’s monsoon climate. The monsoon season, typically spanning June to October, brings periods of intense rainfall and high humidity, which generally helps to cleanse the atmosphere, reducing particulate matter. However, heavy rainfall can also lead to flooding, which can temporarily release pollutants from inundated areas. The pre-monsoon period (March-May) is often the most challenging for air quality. Rising temperatures and decreasing rainfall create stable atmospheric conditions, frequently leading to temperature inversions where cooler air is trapped beneath a layer of warmer air. This inversion prevents vertical mixing, trapping pollutants close to the ground. Dust storms, common during this period, further degrade air quality. The dry season (November-February) is characterized by lower humidity and calmer winds, which, while pleasant, can also contribute to pollutant accumulation. Fog, particularly in December and January, significantly reduces visibility and traps pollutants, creating a hazy atmosphere. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the pre-monsoon and dry seasons, limiting outdoor activities during peak pollution hours. During the monsoon, while overall air quality improves, vigilance is still needed due to potential flooding-related releases. Maintaining indoor air quality through ventilation and air purification can be beneficial throughout the year, especially during periods of elevated pollution.