Pollen Count & Forecast for Johannesburg
About Pollen in Johannesburg
Johannesburg’s spring allergy season (September-November) is dominated by Plane and Oak pollen; London Plane (Platanus x acerifolia) widespread in Houghton and Rosebank; Oak (Quercus) prolific in older suburban gardens and The Wilds. Wattle (Acacia) contributes significantly from Melville Koppies and along the Braamfontein Spruit. Summer (November-March) sees high Grass (Poaceae) pollen levels, originating from Delta Park and Emmarentia Dam.
The Highveld’s dry winter winds lift dust and pollen; high altitude and low humidity increase allergen suspension. Late summer and autumn see elevated Mould (Alternaria, Cladosporium) spore counts, from damp leaf litter in James & Ethel Gray Park and residential gardens after seasonal thunderstorms.
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What Pollen Levels Mean
LOW
Symptoms are unlikely
MED
Moderate risk of symptoms
HIGH
Widespread symptoms likely
V.HI
Expect significant symptoms
X.HI
Extremely high symptom likelihood & severity