Pollen and allergies — Skopje
Skopje lies in the Skopje basin, on the Vardar river, ringed by mountains on all sides. It is precisely that basin position that shapes its pollen season: in winter and early spring, frequent temperature inversions trap both pollution and pollen in the lower layers of the air, so morning concentrations can be considerably higher than in open country. On top of that, the city has large stretches of unmanaged land along the Vardar, on embankments and undeveloped plots, which suit ragweed and mugwort well.
Main allergens and season
- Late winter and early spring (February–March): alder in the riverside woods along the Vardar and Treska — the first pollen of the year.
- Spring (April–May): birch, in Skopje chiefly as an ornamental tree in the housing-block greenery and parks; alongside it, ash from the riverside woods.
- Late spring and summer (May–July): grasses from meadows, embankments, and undeveloped plots in the outer districts.
- Late summer (August–September): ragweed is the hardest stretch of the year for most of Skopje's allergy sufferers, with mugwort leading the way from July. The highest values occur when the wind blows in from the basin and the Vardar valley.
Skopje does not have its own measuring station on this service, so the displayed forecast is based on the European CAMS model (via Open-Meteo) — the values are modeled, not measured, but a useful guide for planning outdoor activities.