Pollen Count in Gloucester

Values in gr/m³ (pollen grains per cubic metre).

4-Day Chart
Annual Overview

📱 Know your air. Daily Gloucester pollen levels on your iPhone.

Gloucester has three main pollen seasons. Tree pollen starts in March and April. Trees like oak, ash, and hazel release pollen. This makes spring air yellow.

Grass pollen season starts in May and June. Grass pollen is very high during this time. People notice more pollen on cars and surfaces.

Weed pollen season happens in late summer. Plants like ragweed and nettle release pollen. This season usually ends in September.

Pollen levels can change each year. Weather affects how much pollen is in the air. Rain can wash pollen away. Warm weather makes pollen increase.

Updated: 6 Oct 2026.

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 Gloucester 🌾. 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	18.9	0	0	0	0	0
Mar	231.6	36.6	0	0	0	0
Apr	90.3	1299.2	4	0	0	0
May	0.2	44.7	95.3	0	0.2	0
Jun	0	0	1116.9	15.8	0.1	0
Jul	0	0.1	726	128	0	0
Aug	0	0	92.8	25	0	0.1
Sep	0	0	3.5	0.1	0	0.9
Oct	0	0	0	0	0	0
Nov	0	0	0	0	0	0
Dec	0	0	0	0	0	0

Values in gr/m³ (pollen grains per cubic metre).

Nearby Places

Disclaimer * The pollen count information provided for Gloucester 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.