Pollen Count in Cachan

4-Day Chart
Annual Overview

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In Cachan, France, pollen seasons happen every year. Trees start producing pollen in February and March. This is the first pollen season. It's not very strong.

Updated: 3/21/2026

In April, May, and June, grasses and flowers bloom. They release more pollen into the air. This is the second pollen season. It's stronger than the first one.

In September and October, weeds and ragweeds produce pollen. This is the third pollen season. It's less strong than the second one.

Cachan's pollen seasons are stronger than others in France. It's because of the city's location near Paris. Paris has many trees and parks that produce pollen.

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 Cachan 🌾. 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	2.2	0	0	0	0	0
Feb	38.4	0	0	0	0	0
Mar	2.2	236.1	0.2	0	0	0
Apr	0.4	261.2	19.7	0	0.6	0
May	0	5.4	144.8	0	1.6	0
Jun	0	0.3	636.3	38.5	0	0
Jul	0	0	283.1	314.8	0	0
Aug	0	0	65.5	95.5	0	13.9
Sep	0	0	5.1	84.3	0	23.5
Oct	0	0	0.3	4.9	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 Cachan 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.