BELANGRIJK - IMPORTANT

Als preventieve veiligheidsmaatregel in verband met mogelijke PHP-kwetsbaarheden is de publicatie van de meetresultaten van schimmelsporen tijdelijk opgeschort. We werken aan het zo snel mogelijk herstellen van deze dienst. Op dit moment in het seizoen wordt het allergierisico door schimmelsporen in de buitenlucht echter als zeer laag beschouwd.

En raison de mesures de sécurité préventives liées à des vulnérabilités potentielles de PHP, la publication des résultats de mesure des spores fongiques est temporairement suspendue. Nous travaillons au rétablissement de ce service dans les meilleurs délais. Néanmoins à ce stade de la saison, le risque allergique lié aux spores de moisissures présentes dans l'air extérieur est considéré comme très faible.

Due to precautionary security measures related to potential vulnerabilities in PHP, the publication of fungal spore monitoring results has been temporarily suspended. We are working to restore this service as soon as possible. However, at this stage of the season, the allergy risk associated with mould spores in the outdoor air is considered to be very low.

New app AirAllergy

AirAllergy launches its new mobile app! Follow pollen levels in real time, consult daily readings and RMI forecast maps for the coming days.

In brief

The allergenic pollen season is now over in Belgium. Monitoring will resume in early January, when the hazel trees are expected to flower.

Although pollen no longer poses a significant risk at this time of year, vigilance is still advised for people who are sensitive to spores, particularly those of the mould Cladosporium or basidiospores released by mushrooms. With the arrival of autumn and the fact that we spend more time indoors, exposure to house dust allergens also warrants special attention. House dust mites, mould in damp or poorly ventilated homes, and pet allergens can cause or perpetuate symptoms of rhinitis, conjunctivitis or asthma, even when no airborne allergens are present in the outdoor air.

Cladosporium

Latest measure: 
Sunday, 18 October, 2026
20252026Mean 2016 - 2025threshold valueMayJunJulAugSepOctNov020004000600080001000012000140001600018000200002200024000fungal spores / m³

Basidiospores

Latest measure: 
Sunday, 18 October, 2026
20252026Mean 2016 - 2025JulAugSepOctNov0100020003000400050006000700080009000100001100012000fungal spores / m³

Good to know

  • A few useful recommendations: avoid outdoor activities, wear sun glasses, do not dry linen outside, rinse your nose regularly, wash your hair before going to sleep.

  • Typical allergy symptoms such as runny nose, cough or shortness of breath (in case of asthma) can easily be mistaken for a cold, flu or coronavirus infection. However, fever and body aches should be given special attention as they might be caused by viral infection. It is recommended to call your general practitioner in case of doubt.

  • The standardized pollen detection technique allows retrospective measurement of the levels from samples taken the day before. Samples are analyzed manually during the working days by optical microscopy.