Pollen Count in San Sebastián de los Reyes

4-Day Chart
Annual Overview

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San Sebastián de los Reyes has high pollen counts from March to May. Trees and plants release pollen into the air during spring. This makes people feel unwell.

Updated: 4/19/2026

Olive trees are common in the area. They produce a lot of pollen in April and May. Their pollen counts are usually highest in the morning.

Grasses and weeds also produce pollen. This happens from May to July. Pollen counts are often higher on warm and sunny days.

People can check pollen forecasts to plan their activities. They can stay indoors when pollen counts are high. This helps them feel better outside.

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 San Sebastián de los Reyes 🌾. 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	0.7	0	0	0	0	0
Feb	19.9	0	1.7	0	0	0
Mar	2.5	2.8	14.3	0	0	0
Apr	3.4	17.8	135.3	0	9.4	0
May	0	3.4	681.8	0	1155.5	0
Jun	0	0	526.8	0	362.2	0
Jul	0	0	188.8	0.1	0.4	0
Aug	0	0	54.1	71.4	0	1
Sep	0	0	11.2	43.9	0	0.1
Oct	0	0	2	13.8	0	0
Nov	0	0	0	79.8	0	0
Dec	0	0	0	0.2	0	0

Nearby Places

Disclaimer * The pollen count information provided for San Sebastián de los Reyes 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.