Captured on 2 September by #Copernicus Sentinel-3, this image shows thick smoke plumes and haze over Kalimantan on the island of Borneo. The haze and smoke are driven by a combination of agricultural burning and peatland fires, exacerbated by El Niño-related drought conditions. The resulting smoke has caused hazardous air quality across the region. For more details visit our Image of the Week: eumetsat.int