Surpur Air Quality Index (AQI)

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Surpur, a municipality in the Valsad district of Gujarat, India, occupies a relatively low-lying position at approximately 23.1895°N, 73.8928°E. The terrain is largely flat, characteristic of the coastal plains of Gujarat, transitioning gently inland. Situated roughly 15km from the Arabian Sea, Surpur’s proximity to the coast significantly influences its climate and, consequently, its air quality. The surrounding landscape is dominated by agricultural land, primarily dedicated to rice cultivation and horticulture, interspersed with pockets of rural settlements. While not directly within a major industrial belt, the broader Valsad district hosts textile, chemical, and engineering industries, contributing to regional background pollution levels that can impact Surpur. The urban-rural gradient is pronounced; Surpur itself is a relatively small urban centre, surrounded by a predominantly agricultural hinterland. This creates a complex interplay where agricultural practices – including seasonal crop burning – and localized emissions from small-scale industries and vehicular traffic combine with regional transport of pollutants. The coastal location also means susceptibility to sea breezes which can either disperse or concentrate pollutants depending on prevailing meteorological conditions. Dust from agricultural activities and unpaved roads further contributes to particulate matter concentrations, impacting local air quality.

Surpur experiences a distinct seasonal air quality pattern dictated by the monsoon and post-monsoon periods. The monsoon season (June-September) generally brings improved air quality due to rainfall effectively scavenging pollutants from the atmosphere. However, increased humidity can also foster mold growth, impacting respiratory health. October-November sees a deterioration as the monsoon retreats, and agricultural burning of crop residue becomes prevalent, significantly elevating particulate matter levels. This is often coupled with calmer winds and temperature inversions, trapping pollutants near the ground. Winter (December-February) presents consistently poorer air quality, with cooler temperatures and stagnant air exacerbating the effects of local emissions. January and February are typically the months when outdoor activity should be minimized for sensitive groups. March-May marks a gradual warming trend, with increasing convective activity offering some dispersion, but also potential for dust storms. The pre-monsoon heat can lead to photochemical smog formation. Individuals with pre-existing respiratory conditions, children, and the elderly should exercise caution during the post-monsoon and winter months, considering indoor activities and using appropriate respiratory protection when outdoors. Monitoring wind patterns and avoiding peak emission times are also advisable.