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Jalālpur, a small city nestled within the state of Gujarat, India, occupies a relatively flat terrain at approximately 20.95°N latitude and 72.91°E longitude. Its location in the coastal plains of Gujarat places it within a predominantly agricultural landscape, characterized by fields of cotton, groundnuts, and other regional crops. The city’s elevation is low, contributing to limited natural dispersion of pollutants. While not directly on the coast, Jalālpur is situated within a reasonable distance of the Gulf of Khambhat, meaning humidity levels can be significant, particularly during the monsoon season. The surrounding region is a mix of rural villages and small towns, with a gradual urban-rural gradient as one moves away from the city centre. The presence of smaller-scale industrial activity, common in Gujarat’s decentralized industrial model, and brick kilns in the surrounding areas, contributes to localised emissions. Road traffic, though less intense than in major metropolitan areas, is a growing source of pollution. The flat topography and limited wind corridors hinder the flushing out of pollutants, creating conditions conducive to air quality stagnation, especially during calmer weather patterns. Understanding this geographic context is crucial for assessing and mitigating air pollution challenges in Jalālpur.

Jalālpur experiences a distinct seasonal air quality pattern dictated by Gujarat’s tropical climate. The post-monsoon months (October-November) often see a temporary improvement in air quality due to rainfall washing away accumulated pollutants. However, this is short-lived. Winter (December-February) brings cooler temperatures and increased temperature inversions, trapping pollutants near the ground and leading to higher concentrations of particulate matter. This is exacerbated by increased biomass burning for warmth and cooking in surrounding rural areas. The pre-monsoon months (March-May) are typically the worst for air quality, with rising temperatures, dust storms, and increased industrial activity contributing to significant pollution. The monsoon season (June-September) offers respite, as heavy rainfall effectively cleanses the air, though increased humidity can promote the formation of secondary pollutants. For those with respiratory sensitivities, avoiding outdoor activity during the pre-monsoon and winter months is advisable. Children and the elderly should be particularly cautious. Monitoring local weather patterns and heeding health advisories are essential. The monsoon, while bringing relief, can also increase mould spore counts, posing a risk to allergy sufferers.