28.05.2026

Late-May Allergies: Why Are Symptoms the Strongest at This Time of Year?

For many people, the end of May is not only the beginning of warm weather and outdoor activities, but also the period when allergy symptoms become significantly more intense. In Hungary, this is when grasses begin their peak pollen release, causing unpleasant symptoms for hundreds of thousands of people. Grass pollen allergy is among the most common seasonal allergies, and symptoms can often persist until the end of summer.

The Peak of Pollen Season Begins in Late May

During late spring, pollen concentration in the air rises considerably. Grasses such as meadow grass, timothy grass, and various fescue species begin flowering in May, and warm, dry weather creates ideal conditions for pollen spread. On windy days, pollen particles can travel long distances, meaning even people living in urban areas may experience severe symptoms. According to the National Center for Public Health’s pollen reports, pollen levels are often high or very high nationwide from the end of May onward.

What Symptoms Does Pollen Allergy Cause?

The symptoms of pollen allergy can often resemble those of a mild cold, but there are important differences. Allergy sufferers most commonly experience sneezing, runny nose, nasal congestion, itchy eyes, watery eyes, and throat irritation. Coughing, fatigue, and difficulty concentrating are also common. Unlike a cold, allergy symptoms usually persist for a longer period, are generally not accompanied by fever, and tend to worsen after spending time outdoors. In some cases, pollen allergies may also trigger asthma-like symptoms, such as shortness of breath or wheezing.

According to experts, indoor air quality can also significantly influence the well-being of allergy sufferers. Based on user experiences and professional recommendations, properly selected air purifiers may help reduce airborne dust, pollen, and other allergens, which can be particularly beneficial during pollen season.

Climate Change May Be Making Allergy Season Longer

In recent years, more research has focused on how climate change affects allergy seasons. Scientific studies suggest that milder winters and longer warm periods cause plants to bloom earlier, extend pollen seasons, and increase pollen concentrations. As a result, many allergy sufferers feel that their symptoms become more severe year after year.

Dry indoor air can also intensify irritation, especially in the eyes and respiratory tract. Because of this, combined devices that both purify and humidify the air are becoming increasingly popular. The PureLife AP4 air purifier and humidifier, for example, not only cleans the air but also includes an evaporative humidification function, which may help create a more comfortable indoor environment during heating season or pollen season.

Cross-Reactivity: When Certain Foods Also Cause Symptoms

Few people know that pollen allergies can sometimes be linked to certain foods. In so-called cross-reactivity syndrome, the immune system mistakes proteins found in some fruits or vegetables for allergens present in pollen. In cases of grass pollen allergy, foods such as melon, tomatoes, peaches, or celery may trigger symptoms. These reactions are usually mild but uncomfortable, including itching in the mouth, throat irritation, or mild swelling after eating.

What Can Help Relieve Symptoms?

Several simple daily habits can help reduce allergy symptoms. During periods of high pollen concentration, it is advisable to monitor daily pollen forecasts, reduce daytime ventilation, and avoid spending extended periods outdoors during the hottest hours of the day. Washing hair and changing clothes in the evening can also help, as pollen easily sticks to hair and fabrics, allowing it to enter the home and bedding.

Many people also report that improved indoor air quality helps them sleep better and reduces nighttime irritation. Modern HEPA-filter air purifiers are capable of removing a significant portion of fine dust particles and pollen from indoor air. Some models — such as devices available in the PureLife product range — operate with multi-stage filtration systems and humidifying functions, which may be especially beneficial for people with allergies or sensitive respiratory systems. Quiet “Night Mode” settings can also be practical, allowing allergy sufferers to sleep undisturbed while the air purifier is running.

What Treatments Can Help?

Medication now provides effective relief for most allergy sufferers. Antihistamines, steroid nasal sprays, and eye drops can significantly reduce symptoms. In more severe or long-lasting cases, allergen-specific immunotherapy may also be considered, potentially reducing allergic reactions over the long term.

Doctors also emphasize that, alongside medication, environmental control plays an important role. Regular cleaning, pollen-filter ventilation, and maintaining good indoor air quality can significantly reduce symptoms in many cases. Changing clothes and washing hair more frequently after returning home may also help minimize the amount of pollen brought indoors.

Does Local Honey Really Help?

Although many home remedies for allergies circulate online, not all are supported by scientific evidence. Local honey is often mentioned as a natural “vaccine” against allergies, but current research has not conclusively proven that it reduces pollen allergy symptoms. According to experts, the pollens found in honey are often not the same types responsible for hay fever.

When Should You See a Doctor?

If allergy symptoms become stronger year after year, interfere with sleep, or affect daily life, it is worth consulting an allergist. Modern diagnostic tests can now more accurately identify which allergens are responsible for symptoms, allowing for more targeted treatment. With proper attention, early therapy, and conscious prevention, the discomforts of late-May allergy season can be significantly reduced.

Sources

Panoráma Poliklinika – May Is the Season of Grass Pollen Allergy
National Center for Public Health – Daily Pollen Report
Cleveland Clinic – Pollen Allergy Overview
National Library of Medicine – Climate Change and Pollen Allergies
The Guardian – Hay Fever Tips From Allergy Experts
American College of Allergy, Asthma & Immunology – Seasonal Allergies
PureLife – AP4 Air Purifier and Humidifier