Barahkurwa Air Quality Index (AQI)

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Barahkurwa, a small town in Bihar, India, sits at coordinates 26.1460°N, 86.9237°E, within the Indo-Gangetic Plain. This region is characterised by flat, fertile alluvial terrain formed by the deposition of sediments from the Ganges and its tributaries. The town’s elevation is relatively low, contributing to limited atmospheric dispersion of pollutants. Barahkurwa is situated within a predominantly agricultural landscape, with rice paddies and wheat fields dominating the surrounding areas. This agricultural activity, while vital to the local economy, introduces sources of particulate matter through crop residue burning and fertiliser application. The urban-rural gradient is sharp; Barahkurwa itself is a concentrated settlement amidst a sea of farmland. Its proximity to larger urban centres like Patna, approximately 60km to the east, means it’s increasingly influenced by regional pollution transport. The lack of significant natural barriers – hills or forests – allows pollutants to accumulate, particularly during periods of stagnant air. The seasonal flooding common to the region can also mobilise pollutants from soil and agricultural runoff. The local climate, typical of the Gangetic plain, exacerbates these issues, with high humidity and temperature fluctuations impacting pollutant behaviour. This geographical setting creates a challenging environment for maintaining good air quality.

Barahkurwa experiences a distinct seasonal air quality pattern. The post-monsoon period, from October to November, often sees the worst conditions. The receding monsoon leaves behind stagnant air, coupled with increased burning of agricultural waste after the harvest, leading to high levels of particulate matter. Temperature inversions are common during these cooler months, trapping pollutants near the ground. Winter (December-February) maintains elevated pollution due to continued biomass burning for heating and cooking, and limited atmospheric mixing. The pre-monsoon months, March to May, bring rising temperatures and dust storms, increasing coarse particulate matter. The onset of the monsoon in June-September generally provides a temporary respite, as rainfall washes pollutants from the air and increased wind speeds aid dispersion. However, high humidity can also promote secondary pollutant formation. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during October-November and December-February. Avoiding peak hours near agricultural areas during harvest is also advisable. Monitoring local weather patterns and heeding health advisories are crucial for protecting respiratory health throughout the year.