Pollen Counts in Luxembourg
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Luxembourg. Forecasts update every day, so check back regularly during pollen season.
Updated: 6 Nov 2026.
Luxembourg Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
Luxembourg's Pollen Seasons
In Luxembourg, tree pollen starts with alder in March. Birch pollen follows in April. Birch is the most common pollen type across the year, and April is the busiest month for pollen overall in our records.
Grass pollen is measured in May, June, and July in Luxembourg. These three months form the recorded grass season. Grass pollen can affect people with allergies, especially during the months when grasses release pollen into the air.
Among weeds, mugwort pollen appears in July and August, while ragweed pollen is recorded in August and September. August therefore includes both weed types in the measured pollen season for Luxembourg in these records overall.
Olive pollen is also recorded in May and June. This overlaps with the start of grass season, so several pollen types occur in Luxembourg during those months, not just one plant group in the air.
Pollen Calendar for Luxembourg
Typical pollen calendar for Luxembourg, averaged across 10 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in July, Ragweed peaks in September. Use it to see which months each pollen type usually rises and falls.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 1.5 | 0 | 0 | 0 | 0 | 0 |
| Feb | 26.8 | 0 | 0 | 0 | 0 | 0 |
| Mar | 138.8 | 210.3 | 0.1 | 0 | 0 | 0 |
| Apr | 3 | 1739.2 | 17.6 | 0 | 0.7 | 0 |
| May | 0.3 | 56.3 | 243.2 | 0 | 1.6 | 0 |
| Jun | 0 | 0.3 | 891.1 | 18.4 | 0.6 | 0 |
| Jul | 0 | 0.2 | 258 | 126.3 | 0 | 0 |
| Aug | 0 | 0 | 47.5 | 34.4 | 0 | 6.1 |
| Sep | 0 | 0 | 3.1 | 12.8 | 0 | 10 |
| Oct | 0 | 0 | 0 | 1.6 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
Values in gr/m³ (pollen grains per cubic metre), averaged across covered cities. Local microclimates vary. Not medical advice.
Places We Cover in Luxembourg
We publish forecasts for these cities across Luxembourg. Check the list to see what is near you, or view them on the Luxembourg Pollen Map above.
Capellen
Clervaux
Grevenmacher
Luxembourg
Mersch
Other
Redange
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.