Sai Buri Air Quality Index (AQI)

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Sai Buri, nestled within Thailand’s southernmost Pattani province, presents a unique geographic context influencing its air quality. Situated at coordinates 6.7013, 101.6167, the city occupies a relatively low-lying coastal plain, just inland from the Gulf of Thailand. The terrain is predominantly flat, characterized by rice paddies and rubber plantations, typical of the region’s agricultural economy. This proximity to the coast introduces a consistent sea breeze, which can both disperse and concentrate pollutants depending on atmospheric conditions. Sai Buri isn’t a major industrial hub, but regional agricultural practices – including seasonal burning of agricultural waste – contribute to particulate matter. The urban-rural gradient is relatively sharp; the city itself is compact with a population of approximately 14,137, quickly transitioning to rural landscapes dominated by agriculture. The surrounding landscape features a network of canals and waterways, crucial for irrigation and transportation, but also potential pathways for pollutant dispersion. The broader region experiences high humidity and consistent temperatures, impacting chemical reactions in the atmosphere and the formation of secondary pollutants. Understanding this interplay between coastal influences, agricultural land use, and the limited industrial presence is key to assessing Sai Buri’s air quality challenges.

Sai Buri’s air quality follows a distinct wet and dry season pattern. The northeast monsoon, prevalent from November to March, brings heavy rainfall and increased humidity. This period generally sees improved air quality as rainfall effectively washes away particulate matter and suppresses dust. However, the increased moisture can also contribute to the formation of mould spores, potentially impacting respiratory health. April to October marks the dry season, and this is when air quality typically deteriorates. Agricultural burning, a common practice to clear land after harvest, significantly elevates PM2.5 and PM10 levels, particularly in May and June. Higher temperatures during these months also promote the formation of ground-level ozone. August and September often experience localised flooding, which can exacerbate air quality issues by stirring up sediment and creating stagnant water conditions conducive to bacterial growth. Sensitive groups – children, the elderly, and those with pre-existing respiratory conditions – should limit strenuous outdoor activity during the peak of the dry season. Monitoring wind patterns is crucial; periods of calm winds can lead to pollutant build-up, while stronger winds offer some relief. The transition months (October/November) can be unpredictable, with fluctuating air quality.