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Dīnānagar, situated in the Gurdaspur district of Punjab, India, occupies a relatively flat alluvial plain at approximately 258 meters above sea level. Its coordinates (32.1500°N, 75.4667°E) place it within the fertile Indo-Gangetic Plain, a region historically known for intensive agriculture. The Ravi River flows nearby, influencing local humidity and potentially contributing to localized fog formation during cooler months. The city’s urban character is typical of a rapidly developing Indian town, transitioning from a primarily agricultural service centre to a more diversified economy. Surrounding Dīnānagar are extensive agricultural lands, predominantly wheat and rice paddies, which contribute significantly to seasonal biomass burning. To the north and west, the landscape gradually rises towards the foothills of the Himalayas, creating a topographical barrier that can trap pollutants during periods of calm weather. The urban-rural gradient is pronounced, with a clear distinction between the denser built-up areas of the city and the surrounding agricultural fields. Industrial activity, while not concentrated within Dīnānagar itself, is present in nearby towns, potentially impacting regional air quality through transport emissions and industrial fallout. This combination of factors – agricultural practices, riverine influence, and regional industrial presence – shapes the city’s unique air quality profile.

Dīnānagar experiences a distinct seasonal air quality pattern. Summer (April-June) brings hot, dry winds that can disperse pollutants, offering relatively clearer air, though dust storms are a concern. However, temperatures exceeding 40°C can exacerbate ozone formation. The monsoon season (July-September) provides temporary relief through rainfall, washing away particulate matter and suppressing dust. However, high humidity can also promote the formation of secondary pollutants. Autumn (October-November) is the most problematic period. Post-monsoon, calm winds coincide with the burning of rice stubble in surrounding agricultural fields, leading to a dramatic spike in particulate matter, particularly PM2.5. This creates dense smog conditions. Winter (December-February) sees persistent temperature inversions, trapping pollutants near the ground and exacerbating the effects of biomass burning and vehicular emissions. Dense fog further reduces visibility and worsens air quality. Sensitive groups – children, the elderly, and those with respiratory conditions – should avoid prolonged outdoor activity during October-November and December-February. Consider using air purifiers indoors and wearing N95 masks when venturing outside during peak pollution periods. Monitoring local conditions and adjusting activity levels accordingly is crucial.