Pollen Counts in Finland
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Finland. Forecasts update every day, so check back regularly during pollen season.
Updated: 6 Nov 2026.
Finland Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
Finland's Pollen Seasons
In Finland, alder pollen season starts in March and can continue through April. Birch pollen follows in April and May. Birch is the most common pollen type across the year, and May is the busiest month for pollen.
Grass plants release pollen during June and July in Finland. These months mark a shift from pollen released by trees to pollen released by grasses. Grass pollen can affect people with allergies.
Weed pollen comes later in the year. Mugwort releases pollen in July and August, while ragweed season falls in September. These late-season plants extend Finland’s pollen calendar beyond the main tree and grass periods for some people with allergies.
Pollen Calendar for Finland
Typical pollen calendar for Finland, averaged across 27 cities from previous years. Alder peaks in March, Birch peaks in May, Grass peaks in July, 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 | 0 | 0 | 0 | 0 | 0 | 0 |
| Feb | 0.6 | 0 | 0 | 0 | 0 | 0 |
| Mar | 268.2 | 3.9 | 0 | 0 | 0 | 0 |
| Apr | 184 | 1864.8 | 0 | 0 | 0 | 0 |
| May | 53.5 | 7854.3 | 6.5 | 0 | 0 | 0 |
| Jun | 0 | 475.2 | 115.4 | 0.2 | 0 | 0 |
| Jul | 0 | 5.6 | 291.6 | 82.6 | 0 | 0 |
| Aug | 0 | 0 | 35.5 | 22.3 | 0 | 0.1 |
| Sep | 0 | 0 | 2.4 | 0.1 | 0 | 15.6 |
| Oct | 0 | 0 | 0 | 0 | 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 Finland
We publish forecasts for these cities across Finland. Check the list to see what is near you, or view them on the Finland Pollen Map above.
Central Finland
Kymenlaakso
Lapland
North Karelia Region
North Savo
Ostrobothnia Region
Other
Päijänne Tavastia
Satakunta
South Karelia Region
Southwest Finland
Tampere
Uusimaa
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.