Pollen Count in Dortmund

4-Day Chart
Annual Overview

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Dortmund has four main pollen seasons. Tree pollen starts in March and April. Many trees release pollen during this time. It's a big problem for people.

Updated: 3/26/2026

Grass pollen season starts in May and June. Grasses release a lot of pollen. This makes it hard for people outside. Pollen counts are usually high.

Weed pollen season starts in July and August. Weeds like ragweed release pollen. This pollen can travel far. People might feel bad outside.

Winter pollen season is smaller. Some trees and plants still release pollen in September and October. Pollen counts are generally lower. But some people still feel effects.

Pollen Forecast Chart

Recommendations

When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).

Wear masks if necessary
Shower after going out
Wear sunglasses if windy
Close windows and doors
Use an indoor air purifier
Avoid wearing woolen clothes outside
Limit outdoor activities

Annual Pollen Overview

Check out this month-by-month overview of the daily average pollen count in Dortmund 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.

	Alder	Birch	Grass	Mugwort	Olive	Ragweed
Jan	0	0	0	0	0	0
Feb	181.3	0	0	0	0	0
Mar	500.8	398.4	0	0	0	0
Apr	4.7	2198.2	15.7	0	0	0
May	0.7	137.5	171.9	0	0.5	0
Jun	0	0.1	710.8	27.7	0.5	0
Jul	0	0.2	210.5	161.3	0	0
Aug	0	0	47.7	43.8	0	15.5
Sep	0	0	3.2	1.4	0	22.9
Oct	0	0	0	0	0	0
Nov	0	0	0	0	0	0
Dec	0	0	0	0	0	0

Nearby Places

Disclaimer * The pollen count information provided for Dortmund is for educational purposes only, sourced from the CAMS European air quality database. We cannot guarantee its accuracy or reliability. This information is not a substitute for professional medical advice. Consult a qualified healthcare provider for medical concerns. We are not medical professionals.