Pollen Count in Belfast

4-Day Chart
Annual Overview

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In Belfast, trees start releasing pollen in late March. This is the beginning of pollen season. It's a time when trees like oak, birch, and hazel produce yellow dust.

Updated: 3/23/2026

The pollen count is highest in April. This means there's a lot of pollen in the air. It's a bad time for people who react to pollen. They might feel uncomfortable.

In May, grasses start producing pollen. This adds to the amount of pollen in the air. It's a busy time for plants, but not great for people who react to pollen.

By July, pollen season starts to slow down. Fewer plants are releasing pollen. The air is cleaner, and people who react to pollen might start to feel better.

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 Belfast 🌾. 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	0.4	0	0	0	0
Mar	82.4	2.5	0	0	0
Apr	36.2	174.9	0.2	0	0
May	0.1	31.4	27.6	0	0
Jun	0	0	366.9	0.1	0
Jul	0	0.1	229.9	3.9	0
Aug	0	0	32	0.7	0
Sep	0	0	1.1	0	0.1
Oct	0	0	0	0	0
Nov	0	0	0	0	0
Dec	0	0	0	0	0

Nearby Places

Disclaimer * The pollen count information provided for Belfast 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.