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Jadia, a small town in the Bihar plains of India (26.0937°N, 86.9852°E), occupies a low-lying position within the Indo-Gangetic Plain. The terrain is remarkably flat, typical of this region, formed by alluvial deposits from the Ganges River system. While not directly on the river itself, Jadia is situated within a network of smaller tributaries and canals crucial for irrigation, influencing local humidity and potentially trapping pollutants. The surrounding landscape is predominantly agricultural, characterized by intensive farming of rice, wheat, and sugarcane. This agricultural activity contributes to air quality concerns through seasonal crop residue burning. Jadia’s relatively small population of 15,083 suggests a predominantly rural character, though increasing urbanization is likely. The urban-rural gradient is subtle, with surrounding villages heavily reliant on Jadia for commerce and services. The lack of significant topographical features – hills or valleys – means that air masses tend to stagnate, particularly during calmer weather conditions. This geographical setting, combined with regional industrial activity further west towards Patna, creates a vulnerability to air pollution accumulation. Dust from agricultural lands and unpaved roads further exacerbates particulate matter levels. The flat terrain hinders natural dispersion of pollutants, making Jadia susceptible to localized air quality issues.

Jadia’s air quality follows a distinct seasonal pattern dictated by the monsoon and post-monsoon conditions. The monsoon season (June-September) generally brings temporary relief, as rainfall washes away particulate matter and increased humidity suppresses dust. However, high humidity can also foster mold growth, impacting respiratory health. October-November sees a deterioration in air quality as the monsoon retreats, and agricultural burning of crop residue intensifies following the harvest. This period is often marked by stagnant air and temperature inversions, trapping pollutants near the ground. Winter (December-February) is typically the worst period, with consistently poor air quality due to low wind speeds, temperature inversions, and increased reliance on biomass burning for heating. Fog further exacerbates the problem, reducing visibility and trapping pollutants. March-May sees a gradual improvement as temperatures rise and winds pick up, though dust storms are common. Sensitive groups – children, the elderly, and those with respiratory conditions – should avoid prolonged outdoor activity during the winter and post-monsoon seasons. Monitoring local conditions and limiting strenuous exercise on poor air quality days is crucial. The months of July-September generally offer the most favourable conditions for outdoor activity.