Fanambana Air Quality Index (AQI)

Loading live AQI data...

Loading historical AQI trends...

Fanambana, nestled within the Antsiranana region of northern Madagascar, presents a unique geographic context influencing its air quality. Situated at coordinates -13.5530, 49.9890, the city’s relatively low elevation – close to sea level – contributes to potential temperature inversions, trapping pollutants. The landscape is characterised by a coastal plain, transitioning inland to rolling hills and eventually the Tsaratanana Massif. This proximity to the Indian Ocean introduces significant humidity and salt spray, impacting particulate matter composition. Fanambana’s urban character is that of a small, developing town, with a population of approximately 12,000. While not heavily industrialised, local artisanal activities, including brick-making and small-scale processing of agricultural products (vanilla, ylang-ylang), contribute to localised emissions. Surrounding the town are areas of intensive agriculture, particularly vanilla plantations, and patches of remnant rainforest. The urban-rural gradient is relatively sharp, with agricultural land immediately bordering the town’s periphery. Dust from unpaved roads and seasonal burning of vegetation for land clearing are significant factors. The prevailing winds, influenced by the southeast trade winds, play a crucial role in dispersing or concentrating pollutants, depending on seasonal shifts and local topography. This coastal location makes Fanambana particularly vulnerable to long-range transport of marine aerosols and pollutants.

Fanambana experiences a distinct wet and dry season, profoundly impacting air quality. The dry season, roughly from May to October, sees a peak in particulate matter pollution. Reduced rainfall means less atmospheric cleansing, and increased dust from unpaved roads and agricultural activities becomes dominant. The southeast trade winds, while generally dispersing pollutants, can also carry dust from inland areas. November marks the transition, with sporadic rainfall offering temporary relief. The wet season, from November to April, generally brings improved air quality due to rainfall washing away pollutants. However, increased humidity can foster mould growth, impacting respiratory health. January and February are typically the wettest months, offering the most favourable conditions for outdoor activity. Temperature inversions, common during the cooler, calmer nights of the dry season, exacerbate pollution by trapping emissions near ground level. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during the dry season, particularly in the late afternoon and early morning. Monitoring local weather patterns is crucial, as wind shifts can rapidly alter pollution levels. Fog, common during the transition periods, can also trap pollutants, reducing visibility and increasing respiratory irritation.