Pollen

Pollen contains proteins that cause an allergic reaction in people. These proteins can trigger the immune system's defense mechanism because they're perceived as an external threat, even though in reality they're harmless. The antibodies produced in an attempt to fight the perceived danger are what causes allergy symptoms.

The pollen map shows pollen concentration levels in different regions. It includes which types of pollen are most prevalent at different times of the year, and helps people with a pollen allergy better plan their lives. The pollen map can help you decide where to go at certain times to avoid your allergies acting up, for example, when traveling to Karelia.

Poplar-seed allergies are rare. Most reactions people have when exposed to poplar seeds aren't caused by the seeds themselves, but by the pollen they carry. Poplar seed fluff is in the air at the same time as pollen from many other plants, so people may think they're allergic to poplar seed fluff when they're not.

Pollen activity is calculated by taking into account flowering periods, weather forecasts, and user reports about allergies. This forecast helps you gauge how a specific allergen might affect you on a given day.

The pollen calendar shows the flowering times of allergenic plants in different regions across Russia. Keep in mind that plants don't stick to a strict schedule. They only bloom based on weather conditions.