Pollen Counts in Latvia
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Latvia. Forecasts update every day, so check back regularly during pollen season.
Updated: 7 Nov 2026.
Latvia Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
Latvia's Pollen Seasons
In Latvia, tree pollen season begins with alder in March. Birch follows in April, when pollen is busiest overall. Birch pollen is also the most common type across the year, so many people with allergies may notice this spring season.
Other pollen arrives later. Olive pollen is measured in May. Grass releases pollen in June and July, while mugwort appears in July and August. Ragweed pollen comes in September, extending the weed season into early autumn for people with allergies.
Pollen Calendar for Latvia
Typical pollen calendar for Latvia, averaged across 9 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in August, Ragweed peaks in September. Use it to see which months each pollen type usually rises and falls.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 2.3 | 0 | 0 | 0 | 0 | 0 |
| Feb | 12 | 0 | 0 | 0 | 0 | 0 |
| Mar | 447.3 | 49.6 | 0 | 0 | 0 | 0 |
| Apr | 9.8 | 7660.4 | 1.5 | 0 | 0.1 | 0 |
| May | 1.4 | 2128.3 | 36.8 | 0 | 0 | 0 |
| Jun | 0 | 14.4 | 332.4 | 0.1 | 0 | 0 |
| Jul | 0 | 0.9 | 234.1 | 80.1 | 0 | 0 |
| Aug | 0 | 0 | 46 | 93.3 | 0 | 8.8 |
| Sep | 0 | 0 | 5.7 | 0.9 | 0 | 41.1 |
| Oct | 0 | 0 | 0.2 | 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 Latvia
We publish forecasts for these cities across Latvia. Check the list to see what is near you, or view them on the Latvia Pollen Map above.
Cēsis Municipality
Jūrmala
Ludza Municipality
Other
Smiltene Municipality
Tukums Municipality
Ventspils
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.