Raspur Patasia Air Quality Index (AQI)

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Raspur Patasia, nestled within the state of Bihar, India, at coordinates 25.5440°N, 85.7247°E, is a small urban centre deeply embedded within the fertile Gangetic plains. The city’s terrain is predominantly flat, characteristic of alluvial deposits from the Ganges River system, which significantly influences the regional climate and air quality. Situated at a relatively low elevation, Raspur Patasia experiences limited natural dispersion of pollutants. The surrounding landscape is a mosaic of intensely cultivated agricultural land, primarily rice and wheat paddies, interspersed with small rural settlements. While not directly adjacent to a major industrial belt, the broader Bihar region is experiencing increasing industrial activity, contributing to regional background pollution levels. The urban-rural gradient is sharp; the city itself is compact, with a population of approximately 15,374, quickly transitioning to agricultural fields. This proximity to agricultural practices introduces seasonal biomass burning, a key factor in local air pollution. The lack of significant topographical features hinders air circulation, exacerbating pollution episodes, particularly during calmer weather conditions. The city’s location within the Indo-Gangetic Plain, known for its stagnant air masses, further compounds these challenges. Dust from agricultural activities and unpaved roads also contributes to particulate matter concentrations.

Raspur Patasia’s air quality follows a distinct seasonal pattern dictated by the monsoon and post-monsoon weather systems. The monsoon season (June-September) generally brings temporary relief, as rainfall washes away particulate matter and suppresses dust. However, high humidity can also foster mould growth, impacting respiratory health. October-November sees a deterioration in air quality as post-monsoon conditions bring stagnant air and increased biomass burning from crop residue disposal after the harvest. This period is often the most polluted. Winter (December-February) is characterised by temperature inversions, trapping pollutants near the ground and leading to prolonged periods of poor air quality, especially in the mornings. Fog further reduces visibility and exacerbates respiratory issues. March-May sees rising temperatures and increased dust storms, contributing to higher particulate matter levels. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit outdoor activity during October-February. Avoiding peak hours of traffic and exercising indoors during polluted periods is advisable. The best time for outdoor activity is generally during the monsoon season, though caution regarding humidity-related issues is still warranted.