Pollen count · United Kingdom
Pollen count in London today
Today's pollen in London and the three days after, species by species, from the CAMS Europe pollen model. The class is the clinical one: 20 grass grains per m³ is a high day, 20 birch grains a moderate one.
Today
No pollen worth counting in the air today. The next season here is Alder, from February.
Pollen is not a trigger today: if you have symptoms, look at dust, mould or indoor allergens.
Forecast from the CAMS Europe run of 2026-10-16 00:00 UTC. Updating live…
Today and the next three days
| Pollen | Fri 16 | Sat 17 | Sun 18 | Mon 19 |
|---|---|---|---|---|
| Alder | none | none | none | none |
| Birch | none | none | none | none |
| Grass | none | none | none | none |
| Mugwort | none | none | none | none |
| Olive | none | none | none | none |
| Ragweed | none | none | none | none |
Daily peak, grains per m³ of air. Classes: AAAAI National Allergy Bureau scale.
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Pollen seasons in London
Typical months for London's latitude; a warm spring moves them a week or two earlier, a cold one later.
- Alder: February – March
- Birch: March – May
- Grass: May – July
- Mugwort: July – August
- Olive: rare or absent here
- Ragweed: August – September
Questions
- What is the pollen count in London today?
- None pollen today No pollen worth counting in the air today. The next season here is Alder, from February. Pollen is not a trigger today: if you have symptoms, look at dust, mould or indoor allergens.
- When is hay fever season in London?
- Grass pollen, the main hay fever trigger, flies in London from May to July. Birch comes earlier, March to May.
- Which pollen is worst in London?
- For most sufferers grass and birch, and ragweed in late summer. The table above names the species doing it today.
- How is the pollen class worked out?
- Each species has its own thresholds (NAB scale): trees low from 1, moderate from 15, high from 90, very high from 1500 grains/m³; grass 1, 5, 20, 200; weeds 1, 10, 50, 500.
Pollen nearby
Manchester · Brussels · Paris · Amsterdam · Dublin · Cologne · Edinburgh · Frankfurt
How this forecast is made
Grains per cubic metre of air from the CAMS Europe pollen model (Copernicus, ~11 km, via Open-Meteo), daily peak in local time, classed per species on the AAAAI National Allergy Bureau scale. A model, not a trap count: a field of ragweed next door reads as its region. The live map shows the pollen field around London hour by hour.