Pollen Counts in Netherlands

Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in Netherlands. Forecasts update every day, so check back regularly during pollen season.

Updated: 26 Oct 2026.

Pollen Map
Pollen Seasons
Pollen Calendar
Covered Places

Netherlands Pollen Map

This map shows daily forecasts for the cities we cover in Netherlands, updated every day.

Netherlands's Pollen Seasons

In the Netherlands, tree pollen arrives at different times. Alder pollen is measured in March, while birch pollen follows in April. Birch is the most common pollen type across the year, and April is the busiest month for pollen.

Grass pollen season comes in summer, with measured pollen in June and July. Grasses can release large amounts of pollen into the air. For people with allergies, this seasonal pollen may bring symptoms during outdoor activities.

Some weed pollen appears later in summer. Mugwort pollen is measured in July and August, while ragweed pollen is measured in August and September. These overlapping months mean weed pollen can continue as summer turns into fall.

Olive pollen is also recorded in May and June. This timing falls between the main birch and grass seasons. Across the year, pollen calendars shift from spring trees to summer grasses and weeds, then gradually wind down.

Pollen Calendar for Netherlands

Typical pollen calendar for Netherlands, averaged across 62 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in July. Use it to see which months each pollen type usually rises and falls.

	Alder	Birch	Grass	Mugwort	Olive	Ragweed
Jan	2.6	0	0	0	0	0
Feb	27.6	0	0	0	0	0
Mar	410.2	286.5	0.1	0	0	0
Apr	5	1044.2	18.4	0	0.3	0
May	0.5	102.5	126.2	0	0.5	0
Jun	0	0.2	742.7	22.1	0.2	0
Jul	0	0.3	299.3	118.4	0	0
Aug	0	0	101.9	33.9	0	0.9
Sep	0	0	14.3	1.2	0	6.4
Oct	0	0	1.5	0.1	0	0
Nov	0	0	0.1	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 Netherlands

We publish forecasts for these cities across Netherlands. Check the list to see what is near you, or view them on the Netherlands Pollen Map above.

Drenthe

Smilde

Flevoland

Friesland

Gelderland

Groningen

Bourtange

Limburg

North Brabant

North Holland

Other

Overijssel

South Holland

Utrecht

Zeeland

Middelburg

Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.