Grass
None
Index value 0 of 5.
Saturday 24 October Updated 22:54
No pollen in BT (Belfast) today.
Tomorrow stays at this level.
Tree
None
Index value 0 of 5.
Weed
None
Index value 0 of 5.
BT covers part of Northern Ireland and follows its regional pollen pattern closely.
Tree pollen here is dominated by birch, alder and oak, with grass led by ryegrass and cocksfoot and weeds by nettle.
Tree pollen typically peaks in April. Grass counts are highest from June. Birch and alder are the headline tree triggers; the grass season is shorter than in southern England.
For the wider regional view see Northern Ireland, or browse every area we cover.
Hay fever season in BT (Belfast)
The pollen season in BT (Belfast) runs from March to October. The worst months are typically April, May, July and August.
| Pollen | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree pollen | Jan: none | Feb: none | Mar: low | Apr: peak | May: peak | Jun: low | Jul: none | Aug: none | Sep: none | Oct: none | Nov: none | Dec: none |
| Grass pollen | Jan: none | Feb: none | Mar: none | Apr: none | May: low | Jun: active | Jul: peak | Aug: active | Sep: low | Oct: none | Nov: none | Dec: none |
| Weed pollen | Jan: none | Feb: none | Mar: none | Apr: none | May: none | Jun: none | Jul: active | Aug: peak | Sep: active | Oct: low | Nov: none | Dec: none |
- Tree pollen in BT (Belfast) runs from March to June. It peaks in April.
- Grass pollen in BT (Belfast) runs from May to September. It peaks in July.
- Weed pollen in BT (Belfast) runs from July to October. It peaks in August.
See the full UK pollen calendar or read when hay fever season starts and ends.