Pollen Counts in Andorra
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Andorra. Forecasts update every day, so check back regularly during pollen season.
Updated: 7 Nov 2026.
Andorra Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
Andorra's Pollen Seasons
In Andorra, tree pollen season includes alder and birch in April and May. Olive pollen follows in May and June. These overlapping months can bring several kinds of tree pollen, and may affect people who have pollen allergies.
Grass pollen is the most common type across the year in Andorra. Its season runs from May through July, with June the busiest month for pollen overall. For many people with allergies, this busy stretch may be noticeable.
Weed pollen arrives later in the year. Ragweed pollen is recorded in August and September, while mugwort pollen appears in September, October, and November. Their seasons overlap in September, extending weed pollen into autumn in Andorra.
Pollen Calendar for Andorra
Typical pollen calendar for Andorra, averaged across 3 cities from previous years. Alder peaks in April, Birch peaks in May, Grass peaks in June, Olive peaks in May. Use it to see which months each pollen type usually rises and falls.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 0 | 0 | 0 | 0 | 0 | 0 |
| Feb | 7.9 | 0 | 0.2 | 0 | 0 | 0 |
| Mar | 11.5 | 13.2 | 3.5 | 0 | 0 | 0 |
| Apr | 51.1 | 55.7 | 22.9 | 0 | 0.6 | 0 |
| May | 47.8 | 66.2 | 206.5 | 0 | 43.4 | 0 |
| Jun | 8.5 | 14.3 | 376.8 | 0 | 42.5 | 0 |
| Jul | 0 | 0 | 136.6 | 0.2 | 0.1 | 0 |
| Aug | 0 | 0 | 62.7 | 0.4 | 0 | 4.2 |
| Sep | 0 | 0 | 13 | 2.3 | 0 | 1.9 |
| Oct | 0 | 0 | 3.4 | 1.5 | 0 | 0 |
| Nov | 0 | 0 | 0.5 | 1.1 | 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 Andorra
We publish forecasts for these cities across Andorra. Check the list to see what is near you, or view them on the Andorra Pollen Map above.
Other
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.