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Anghad, a small city nestled within the larger tapestry of Gujarat, India, occupies a relatively flat terrain at approximately 22.3913°N latitude and 72.9946°E longitude. Its location in the state’s western region places it within a predominantly arid to semi-arid climate zone. The surrounding landscape is characterised by agricultural lands, primarily cotton and groundnut cultivation, interspersed with patches of scrubland typical of the Kathiawar peninsula. While not directly on the coast, Anghad is situated inland from the Gulf of Khambhat, influencing local humidity levels, particularly during the monsoon season. The urban-rural gradient is quite pronounced; Anghad itself is a compact settlement of around 19,805 people, quickly giving way to agricultural fields and smaller villages. The nearest significant industrial belt lies to the north, around Vadodara, contributing to regional background pollution levels. Topography offers little natural ventilation, meaning pollutants can accumulate, especially during calm weather conditions. The lack of substantial elevation and limited tree cover exacerbate this effect. Dust from agricultural activities and unpaved roads is a significant local contributor to particulate matter, impacting air quality. The city’s growth, though modest, is increasing demand for energy and transportation, further influencing emissions.

Anghad experiences a distinct seasonal air quality pattern. The post-monsoon months (October-November) often see relatively cleaner air, as rainfall washes away accumulated pollutants. However, this is short-lived. Winter (December-February) brings cooler temperatures and increased temperature inversions, trapping pollutants near the ground, leading to a noticeable deterioration in air quality. Calm winds during this period prevent dispersion. The pre-monsoon months (March-May) are the most challenging, with rising temperatures, dust storms, and agricultural burning contributing to high levels of particulate matter. May is typically the worst month for air quality. The arrival of the monsoon (June-September) provides temporary relief, as heavy rainfall effectively scrubs the atmosphere. However, increased humidity can also promote the formation of secondary pollutants. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit outdoor activity during the pre-monsoon and winter months. During the monsoon, while air is cleaner, the dampness can exacerbate respiratory issues. Monitoring local weather patterns and avoiding peak pollution times are crucial for protecting health. The agricultural cycle heavily influences pollution levels, with harvest seasons often correlating with increased emissions.