Pollen Count & Forecast for Monterrey
About Pollen in Monterrey
Monterrey’s winter allergy season (December-March) is dominated by Mountain Cedar and Privet; Mountain Cedar (Juniperus ashei) prolific in the Sierra Madre Oriental; Privet (Ligustrum) widespread across city streets. Ash (Fraxinus) and Oak (Quercus) contribute significantly from Parque Fundidora. Summer and autumn (June-October) see high Grass (Poaceae) and Ragweed (Ambrosia) pollen levels, originating from the Santa Catarina River bed.
Mountain winds carry pollen into the city basin; the bowl-like geography traps particles, causing localised high concentrations. Late summer rains see elevated Mould (Alternaria, Cladosporium) spore counts, from humid vegetation in the Cerro de la Silla foothills and damp drainage channels.
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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