Pollen Count in Västerås

4-Day Chart
Annual Overview

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Västerås has different types of pollen. Trees produce pollen in spring. Grass pollen appears in late spring and early summer. Weeds produce pollen in late summer and autumn.

Updated: 5/12/2026

Tree pollen starts in March. It's usually highest in April and May. During this time, many trees release pollen. It's a big problem for some people.

Grass pollen season starts in late May. It usually lasts until July. Grass pollen can travel far. This makes it hard for people who are affected.

Weeds produce pollen in August and September. Some weeds produce pollen until October. This can still cause problems. It's good to know when pollen season starts.

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 Västerås 🌾. 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	Ragweed
Jan	0	0	0	0	0
Feb	0.2	0	0	0	0
Mar	26.1	12.9	0	0	0
Apr	4.3	4432.3	0.1	0	0
May	6.1	820.3	15.2	0	0
Jun	0	24.5	366.6	0.1	0
Jul	0	2.8	512.7	66.2	0
Aug	0	0	65.5	26	1
Sep	0	0	3.4	0.3	28
Oct	0	0	0	0	0
Nov	0	0	0	0	0
Dec	0	0	0	0	0

Nearby Places

Nyköping (99 km)

Disclaimer * The pollen count information provided for Västerås 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.