Pollen forecast
CSENCurrent pollen levels and a 4-day forecast for Czech allergens.
Mainly May to August, peaking in June. Birch and alder release in spring, ragweed in late summer.
Values are modeled (CAMS, ~11 km grid) in grains per m³, not from pollen traps — treat them as indicative.
Yes — rain temporarily washes pollen out of the air and lowers concentrations.