Pollen Count in Lorient

4-Day Chart
Annual Overview

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

In late winter and early spring, tree pollen starts first in Lorient. Hazel, alder, and birch release tiny grains into the air. Pine and cypress can also add pollen. This season often begins in February and grows stronger in March and April.

Updated: 7/19/2026

In spring, tree pollen stays high, and grass pollen begins. Grasses grow in fields, roadsides, and gardens. Their pollen often rises from May into July. Oak and plane trees may also release pollen during this time, adding to the spring air.

In early summer, grass pollen can still be strong in Lorient. Wild grasses and lawn grasses are the main sources. Some weeds also begin to spread pollen. This period often lasts through June and July, especially in warm and windy weather.

In late summer and early autumn, weed pollen becomes more important. Mugwort and plantain are common pollen plants in this season. Their pollen often appears from August to September, and sometimes into October. By late autumn, pollen levels usually drop lower.

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 Lorient 🌾. 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	196.6	0	0	0	0	0
Mar	391.3	321.1	1.7	0	0	0
Apr	5.3	783.3	25.8	0	0.2	0
May	0.3	22.1	161.4	0	4.9	0
Jun	0	0	458.7	0.1	0.5	0
Jul	0	0	239.3	21	0	0
Aug	0	0	64.9	22.3	0	1.1
Sep	0	0	3.8	11.8	0	0.2
Oct	0	0	1	1.2	0	0
Nov	0	0	0	0.1	0	0
Dec	0	0	0	0	0	0

Nearby Places

Disclaimer * The pollen count information provided for Lorient 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.