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Port Wentworth, Georgia, is a rapidly growing city situated in Chatham County, strategically positioned along the Savannah River, approximately 12 miles southwest of Savannah. Its geography is characterized by low-lying coastal plains, typical of the Atlantic Coastal Plain, with elevations generally below 50 feet. This proximity to the river and the Atlantic Ocean exerts a significant influence on the local climate and, consequently, air quality. The surrounding landscape is a mix of maritime forests, freshwater wetlands, and increasingly, suburban development. Historically an agricultural area focused on peanuts and cotton, Port Wentworth is now experiencing substantial industrial growth, particularly related to logistics and port activities due to its access to the Savannah Harbor. This industrial expansion, coupled with increased traffic from the growing population and proximity to Interstate 95, contributes to localized pollution sources. The urban-rural gradient is becoming increasingly blurred as development spreads, impacting regional air circulation patterns. The flat terrain offers little natural dispersion for pollutants, potentially leading to localized build-up, especially during periods of stagnant air. The Savannah River acts as a potential pathway for pollutant transport, though prevailing winds generally blow from the southwest, carrying pollutants inland.

Port Wentworth’s air quality follows a distinct seasonal pattern. Spring (March-May) often sees moderate pollution levels as temperatures rise and vegetation begins to release biogenic volatile organic compounds (BVOCs), which can react with nitrogen oxides to form ozone. Summer (June-August) is typically the period of highest ozone concentrations, driven by intense sunlight and heat, exacerbating the chemical reactions. Stagnant air masses are common, trapping pollutants. Autumn (September-November) brings cooler temperatures and increased wind speeds, generally improving air quality, though occasional temperature inversions can still lead to localized pollution events. Winter (December-February) usually experiences the cleanest air, with cooler temperatures reducing chemical reaction rates and stronger winds dispersing pollutants. However, wood burning for heating can contribute to particulate matter pollution. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during peak ozone periods in summer. Fog, common in the cooler months, can trap pollutants near the ground. Monitoring wind patterns is crucial; southwesterly winds can bring pollutants from industrial areas, while northerly winds generally offer cleaner air. The wet season, extending through much of the year, helps to wash pollutants from the atmosphere, providing temporary relief.