Six separate rows, not one combined score
Our city pages show alder, birch, grass, mugwort, olive and ragweed separately. These are the six pollen variables configured for PollenCount’s CAMS forecast pipeline. They are not a complete list of all pollen species or airborne allergens.
| Display name | Group used on our pages |
|---|---|
| Alder | Tree pollen |
| Birch | Tree pollen |
| Grass | Grass pollen |
| Mugwort | Weed pollen |
| Olive | Tree pollen |
| Ragweed | Weed pollen |
The CAMS dataset catalogue documents the available forecast variables. The separate grass row does not distinguish individual grass species on our site.
Follow one row across the four days
Each cell shows a daily maximum in grains/m³, or a labelled maximum for the available hours when coverage is partial. A dash means the forecast is missing. The same type can be available on one day and missing on another.
The small trend charts show direction within each type. Since each chart has its own scale, use the printed values when comparing different types.
What the leading type means
The overview shows the highest concentration band reached by any of the six types, using different reference concentrations for different pollen types. Types reaching the same moderate or high band are shown together. Choose a known trigger to follow that type on its own. How pollen levels are shown.
Including a type in the table does not mean that it is common locally, or that it is currently in season. Keep the concentration, date and coverage label together. Seasonal patterns provide context.
Explore your local forecast
Choose a city in the forecast directory to see all six pollen types. Open a type’s name in the table for its dedicated forecast, or save the city to return to it quickly.