Samdhin Air Quality Index (AQI)

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Samdhin, a small city nestled within the expansive Uttar Pradesh state of India, occupies a relatively flat terrain at approximately 213 meters (699 feet) above sea level. Its coordinates (27.1370, 79.7030) place it within the Indo-Gangetic Plain, a vast and fertile region. The surrounding landscape is predominantly agricultural, characterized by intensive farming of wheat, rice, and sugarcane. This agricultural activity, while vital to the local economy, contributes to air pollution through seasonal crop residue burning. Samdhin’s urban character is typical of a smaller Indian city, with a mix of residential areas, local markets, and limited industrial activity. The city isn’t directly adjacent to a major river, though smaller tributaries and canals irrigate the surrounding farmland. The proximity to larger industrial belts in nearby cities like Bareilly and Moradabad, approximately 60-80km distant, means Samdhin experiences pollutant transport. The urban-rural gradient is fairly sharp; transitioning quickly from densely populated areas to agricultural fields. This geographical setting, combined with regional weather patterns, creates conditions conducive to air quality challenges, particularly during the post-monsoon season when stagnant air masses trap pollutants. The flat terrain hinders natural dispersion, exacerbating the impact of local emissions and transported pollutants.

Samdhin’s air quality follows a distinct seasonal pattern. The monsoon season (July-September) generally offers the cleanest air, as rainfall effectively washes away particulate matter and increased humidity suppresses dust. However, this relief is temporary. October-November sees a significant deterioration as post-monsoon conditions bring cooler temperatures and stable atmospheric layers, leading to temperature inversions that trap pollutants near the ground. This period coincides with the burning of crop residue from the harvested kharif crops, dramatically increasing PM2.5 and PM10 levels. December and January are typically the worst months, with consistently poor air quality due to continued crop burning, winter fog, and reduced wind speeds. February-March sees a gradual improvement as temperatures rise and wind patterns shift, but dust storms can still contribute to particulate matter. April-June brings hot, dry conditions with increased dust levels, though the higher temperatures and winds can offer some dispersion. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during October-February. Staying indoors during peak pollution times, using air purifiers, and wearing masks when venturing outside are crucial preventative measures.