Pollen Count in Portlaoise

4-Day Chart
Annual Overview

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Pollen seasons in Portlaoise, Ireland usually start in March. Trees like oak, ash, and hazel produce pollen. This makes people feel unwell. Pollen counts are high.

Updated: 6/25/2026

Grasses produce pollen in late April and May. This pollen is very bad for people. They feel sick and stay indoors. Windows and doors are closed.

June and July are peak months for weed pollen. Nettle and dock weeds grow everywhere. Their pollen makes people feel uncomfortable. Summer days are ruined.

By August, pollen counts decrease. People can go outside again. Autumn arrives and trees prepare for winter. Pollen seasons end in Portlaoise, Ireland slowly.

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 Portlaoise 🌾. 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	0.6	0	0	0	0	0
Mar	25.5	7.2	0	0	0	0
Apr	36.6	299.7	0.4	0	0	0
May	0	14.1	38.3	0	0.1	0
Jun	0	0	529.4	0	0	0
Jul	0	0	452	1.5	0	0
Aug	0	0	56.8	0.3	0	0
Sep	0	0	1.9	0	0	0.1
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 Portlaoise 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.