Pollen Count & Forecast for Riyadh
About Pollen in Riyadh
Riyadh’s spring allergy season (February-April) is dominated by Date Palm and Mesquite pollen; Date Palm (Phoenix dactylifera) widespread across city streets; Mesquite (Prosopis juliflora) prolific in Wadi Hanifa and King Salman Park. Saltwort (Salsola) contributes significantly from the surrounding desert. Summer (May-September) sees high Grass (Poaceae) pollen levels, originating from irrigated lawns in Salam Park and around Wadi Namar.
Frequent dust storms carry fine particulate matter and desert pollen, leading to high concentrations in the narrow streets of Al-Bathaa. Autumn and winter see elevated Mould (Aspergillus, Alternaria) spore counts, from irrigated vegetation in Diriyah and damp building interiors.
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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