Pollen map

What a pollen map is

The pollen map shows where, when, and with what intensity plants that cause allergic reactions are blooming. Yandex.Weather provides reference information about pollen concentrations in most common plants.

List of allergens
  • Alder
  • Ash
  • Birch
  • Cereals
  • Elm
  • Hazel
  • Maple
  • Nettle
  • Oak
  • Pine
  • Ragweed
  • Sagebrush
  • Spruce
  • Weed
  • Willow

The map shows how the area of pollen spread is going to change accurate within 10 km. The map shows the forecast for the upcoming week and statistics for the entire blooming season.

Restriction. The pollen map covers separate territories of European Russia, Moldova, Belarus, Ukraine, Kazakhstan, and other neighboring countries.

How the map is made

The pollen forecast is provided by the Aerostate service, a partner of Yandex.Weather. We then visualize the data received and display it on the map, taking into account the climate and vegetation type of each region. The allergy season and its duration are regularly recalculated depending on temperature, precipitation, and wind direction.

Yandex.Weather forecasts the spread of pollen separately for a short- and long-term period:

  • Forecast for the next seven days takes into account the current data on the speed and direction of wind, precipitation, and temperature.
  • Forecast for upcoming weeks and months takes into account the climate calendar of the selected area's plant blooming and contains statistics on the spread of pollen over the past seven years of observations.

How often data is updated

Map data is updated every 24 hours.

How to use the map

To open the pollen map:

  • On the Yandex.Weather homepage, in the Weather map block, select the Pollen tab and click Take a look.
  • In the top right corner of any page, open the Weather map list and select Pollen.
  • On the service's homepage, click on the card with pollen data.

The map provides data on the blooming of the most common allergenic plants. By default, you see pollen counts for the plant with the highest pollen concentration in your region. For example, if the concentration of birch pollen in your region is average and that of pine and ash is low, the map will display the average pollen concentration.

You can view:

  • Data on pollen concentrations for a specific period. Select the dates you need on the timeline at the bottom of the map.
  • Data on blooming plants and pollen concentrations in a specific region. To get this information, click on the map area that interests you.
  • Data on pollen concentrations for only those allergens which are relevant to you. Use the filter in the bottom left corner of the map.

Table of allergen concentrations

The table shows threshold values for pollen concentrations and their correspondence to map gradation. Each allergen has its own value calculated. The concentration is measured in pollen grains per cubic meter of air.

Allergen Pollen grain count per m3 of air
Low Moderate High
Trees
  • Alder
  • Ash
  • Birch
  • Elm
  • Hazel
  • Maple
  • Oak
  • Pine
  • Spruce
  • Willow
> 11 > 101 > 1001
Herbs
  • Cereals
  • Nettle
  • Ragweed
  • Sagebrush
  • Weed
> 11 > 31 > 101
Allergen Pollen grain count per m3 of air
Low Moderate High
Trees
  • Alder
  • Ash
  • Birch
  • Elm
  • Hazel
  • Maple
  • Oak
  • Pine
  • Spruce
  • Willow
> 11 > 101 > 1001
Herbs
  • Cereals
  • Nettle
  • Ragweed
  • Sagebrush
  • Weed
> 11 > 31 > 101

There is no data on the pollen map

Possible cause:

  • The air contains very low concentrations of pollen, no more than 11 pollen grains per cubic meter. Such a low concentration usually causes no allergy.
  • There is no data on pollen transfer to the region due to an inaccurate wind or temperature forecast. Yandex.Weather monitors the accuracy of its forecast and immediately contacts the respective partner in such cases.