Rustington Air Quality Index (AQI)

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Rustington, a coastal parish in West Sussex, England, occupies a relatively low-lying position within the Arun district. Situated at coordinates 50.8102° N, -0.5052° W, the town benefits from a south-facing aspect towards the English Channel, approximately 1.5 miles distant. The terrain is gently undulating, characteristic of the Weald, transitioning from slightly higher ground inland to the flat coastal plain. This proximity to the sea exerts a significant influence on local weather patterns and, consequently, air quality. Rustington is nestled within a predominantly rural landscape, historically dominated by agricultural land, though increasing suburbanisation is evident. The surrounding area features a mix of arable farming and horticultural activity. While not directly within a major industrial belt, the larger conurbations of Worthing and Littlehampton, with associated transport emissions, lie within a reasonable commuting distance, contributing to regional background pollution levels. The urban-rural gradient is relatively sharp, with pockets of denser development interspersed with extensive green spaces. The prevailing wind direction, typically southwesterly, carries pollutants from these areas towards Rustington, while onshore breezes can also introduce marine aerosols and pollutants. The coastal location moderates temperatures, but can also lead to localised fog formation, trapping pollutants near ground level.

Rustington’s air quality exhibits a distinct seasonal pattern. Winter, from November to February, often sees poorer air quality due to increased wood burning for heating and temperature inversions – stable atmospheric conditions where cold air is trapped beneath warmer air, preventing pollutant dispersal. Calm, foggy conditions are common, exacerbating this effect. March and April bring improvements as temperatures rise and winds become more frequent, flushing out accumulated pollutants. Summer, from June to August, generally enjoys the cleanest air, aided by strong sea breezes and higher temperatures promoting pollutant dispersion. However, increased road traffic due to tourism can locally elevate nitrogen dioxide levels. Autumn, particularly October and November, witnesses a return to poorer conditions as heating demand increases and agricultural activities, such as harvesting, contribute to particulate matter. Sensitive individuals – those with respiratory conditions like asthma or COPD, the elderly, and young children – should be particularly cautious during winter months and periods of calm weather. Monitoring local forecasts and limiting strenuous outdoor activity on high pollution days is advisable. The prevailing wind direction also plays a role; onshore winds can bring marine pollutants, while easterly winds may transport pollutants from the continent.