Pollen Count & Forecast for Nairobi

Nairobi’s dry seasons (January-February, June-September) are dominated by Cypress and Eucalyptus pollen; Cypress (Cupressus lusitanica) common in Karura Forest and City Park; Eucalyptus (Eucalyptus globulus) widespread across urban woodlots. Jacaranda (Jacaranda mimosifolia) blooms across city avenues in October. Year-round Grass (Poaceae) pollen originates from the Ngong Hills and Nairobi National Park.

High altitude and cool morning mists trap allergens near the ground. Rainy seasons (March-May, October-December) see elevated Mould (Alternaria, Cladosporium) spore counts; spores originate from damp vegetation along the Nairobi River and suburban gardens.