Pokhrām Air Quality Index (AQI)

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Pokhrām, a small city nestled within the state of Bihar, India, occupies a geographically significant position in the Gangetic plains. Located at coordinates 25.9358°N, 86.1974°E, the city’s terrain is predominantly flat, characteristic of the alluvial floodplains formed by the Ganges River and its tributaries. The surrounding landscape is intensely agricultural, dominated by rice paddies and wheat fields, typical of the region’s fertile soil. Pokhrām’s elevation is relatively low, contributing to the potential for temperature inversions that trap pollutants. The Phalgu River, a sacred tributary of the Ganges, flows nearby, but its water quality is often compromised by agricultural runoff and untreated sewage, indirectly impacting local environmental health. The urban-rural gradient is sharp; Pokhrām is surrounded by smaller villages and agricultural land, creating a complex interplay between rural practices (like crop burning) and urban emissions. While not a major industrial hub itself, Pokhrām’s proximity to larger industrial areas in Bihar contributes to regional background pollution levels. The city’s air quality is therefore heavily influenced by both local sources – vehicular traffic, dust from unpaved roads, and biomass burning – and the broader regional atmospheric conditions. This combination creates a unique set of challenges for maintaining clean air.

Pokhrām experiences a distinct seasonal air quality pattern dictated by the monsoon and post-monsoon climate. The monsoon season (June-September) generally brings temporary relief from pollution as rainfall washes particulate matter from the atmosphere and suppresses dust. However, increased humidity can also foster mold growth, impacting respiratory health. October-November sees a significant deterioration in air quality following the monsoon, coinciding with post-harvest crop residue burning – a major source of PM2.5. Shallow temperature inversions are common during these cooler months, trapping pollutants near the ground. December-February are typically the worst months for air quality, characterized by stagnant air, low wind speeds, and frequent fog, exacerbating the effects of emissions from vehicles and domestic fuel burning. March-May witness rising temperatures and increasing dust levels as the dry season progresses, leading to a gradual worsening of conditions. Sensitive groups – children, the elderly, and those with respiratory illnesses – should limit outdoor activity during October-February. Avoiding peak traffic hours and using well-fitted masks when outdoors are recommended precautions. Monitoring local weather patterns and heeding health advisories is crucial.