Grass pollen comes from many species growing on meadows, pastures, verges, and lawns. There is no single “grass pollen” season: timing differs by region and depends on mowing, drought, and weather. Grasses are wind-pollinated and can cause symptoms even though their flower heads are small and inconspicuous.
Season in Poland
Grasses usually start pollinating in May, with elevated values continuing into July or August. The start can be earlier in the south and warmer locations and later in colder regions. Dry, windy weather helps pollen become airborne, while local mowing also changes exposure.
Sneezing, a watery runny nose, nasal blockage, and itchy eyes are common. In people with asthma, grass pollen can worsen cough or wheeze. Diagnosis requires considering symptoms in their seasonal context and, when appropriate, allergy testing.
Forecast and thresholds
Polish values on pelud.net come from the CAMS model through Open-Meteo: they are modeled, not measured at a local station. This is an orientative forecast, not a measurement from a particular meadow. The risk model uses a grass high threshold above 30 grains/m³; the full calculation method explains why the plant-specific threshold matters.
Practical steps
At the height of the season, choose shorter activities when values are high, rinse your face and hair after walks, and stay away from mowing work. Agree medication with a doctor or pharmacist. Breathlessness, wheezing, or rapidly worsening symptoms require urgent help.