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29 January 2018

The drought conditions have resulted in very dry air with low pollen and fungal spore concentrations. In some areas of Cape Town, light rain has fallen at times and there has been an immediate response in the Alternaria and Cladosporium concentrations. Cladosporium spores are scant, despite increases  but Alternaria is a dry air spore and spores quickly after rain. The Alternaria concentrations at the Observatory sampling site this week were just below the significant level.