Pollen Count in Portishead

4-Day Chart
Annual Overview

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Portishead has two main pollen seasons. Tree pollen season starts in March and April. Trees like oak, ash, and hazel release pollen. This makes people feel unwell.

Updated: 4/26/2026

Grass pollen season starts in May and June. Grass pollen is very common in Portishead. The pollen counts are usually highest in late May. People stay indoors when counts are high.

Weed pollen season starts in July and August. Weeds like ragwort and nettle release pollen. This pollen can travel far and affect people. Pollen counts can be high on warm days.

Pollen counts can vary from year to year. Weather conditions affect pollen release. Rainy days bring low pollen counts. Sunny days bring high pollen counts.

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 Portishead 🌾. 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	0.9	0	0	0	0	0
Mar	243.2	86.3	0	0	0	0
Apr	188.1	1417.5	2.2	0	0	0
May	0.3	42.7	59.2	0	0.2	0
Jun	0	0	740.6	7.4	0	0
Jul	0	0.1	423.3	99.3	0	0
Aug	0	0	51.6	21.3	0	0.2
Sep	0	0	1.1	0.1	0	0.8
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 Portishead 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.