Alder pollen today
Alder pollen is not high anywhere we track today. Season runs January to March, peaking in February.
Alder is the first pollen of the year. It can start releasing in January while everything still looks bare and wintery, which is why February symptoms are so often blamed on a lingering cold for weeks before anyone suspects allergy.
Season: January to March, peaking in February. Updated September 22, 2026.
Alder pollen levels across Europe today
| City | Alder today |
|---|---|
| London | Low |
| Berlin | Low |
| Paris | Low |
| Madrid | Low |
| Rome | Low |
| Vienna | Low |
| Amsterdam | Low |
| Stockholm | Low |
| Warsaw | Low |
| Munich | Low |
| Bratislava | Low |
| Prague | Low |
| Budapest | Low |
| Lisbon | Low |
| Brussels | Low |
| Milan | Low |
| Barcelona | Low |
| Turin | Low |
| Zurich | Low |
| Frankfurt | Low |
| Zagreb | Low |
| Athens | Low |
| Manchester | Low |
| Edinburgh | Low |
| Birmingham | Low |
| Hamburg | Low |
| Cologne | Low |
| Lyon | Low |
| Marseille | Low |
| Bordeaux | Low |
| Porto | Low |
| Gothenburg | Low |
Common questions
When is alder pollen season?
Alder runs from January into March, peaking in February. Mild winters pull the start earlier.
Why do my symptoms start in winter?
Alder and hazel both release pollen well before spring. If you react in February but feel fine in summer, an early tree allergen is the likely cause.
Is alder related to birch?
Yes, closely. People sensitive to alder often react to birch in April as well, because the proteins are similar.