Mirzāpur Air Quality Index (AQI)

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Mirzāpur, a small town nestled in the state of Bihar, India, occupies a geographically significant position within the broader Gangetic plains. Located at approximately 26.1616° N latitude and 87.2349° E longitude, the town’s terrain is predominantly flat, characteristic of the Indo-Gangetic alluvial plain. The surrounding landscape is a mosaic of agricultural fields, primarily cultivating rice and maize, interspersed with pockets of scrubland and scattered villages. Mirzāpur’s proximity to the Ganges River, though not directly on its banks, influences the regional climate and, indirectly, air quality. The river’s presence contributes to humidity and can trap pollutants under certain meteorological conditions. The urban–rural gradient around Mirzāpur is gradual; the town itself is relatively small, transitioning quickly into agricultural land. While not situated within a major industrial belt, the region experiences agricultural burning during post-harvest seasons, a significant contributor to particulate matter pollution. The elevation is low, typically below 100 meters above sea level, which can exacerbate the trapping of pollutants, particularly during periods of temperature inversion. The town’s location within a densely populated state, coupled with increasing vehicular traffic and limited industrial regulation, presents ongoing challenges to maintaining clean air. The flat topography limits natural ventilation, further compounding the issue. The surrounding agricultural practices, while vital to the regional economy, contribute to seasonal spikes in air pollution.

Mirzāpur’s air quality follows a distinct seasonal pattern dictated by the region’s monsoon climate. The dry season, spanning roughly from October to May, typically witnesses the poorest air quality. During these months, lower temperatures and calmer winds frequently lead to temperature inversions, where a layer of warm air traps cooler air (and pollutants) near the ground. Agricultural burning, a common practice after the harvest of rice and other crops, intensifies during November and December, releasing substantial amounts of smoke and particulate matter. January and February often experience dense fog, further reducing visibility and trapping pollutants. The monsoon season, from June to September, brings relief as strong winds and frequent rainfall wash away accumulated pollutants. However, even during the monsoon, localized pollution from construction activities and vehicular emissions persists. The pre-monsoon period (April-May) can be problematic, with rising temperatures and decreasing rainfall leading to a build-up of pollutants. Sensitive groups, including children, the elderly, and individuals with respiratory conditions, should exercise caution during the dry season, particularly during periods of agricultural burning and fog. Outdoor activities are best avoided during these times. The monsoon months offer a window for improved air quality and increased outdoor engagement, though vigilance regarding localized pollution sources remains important. The transition periods, spring and autumn, require careful monitoring as weather patterns shift and agricultural practices change.