Grass
Very low
Index value 1 of 5.
Grass active.
Saturday 15 August Updated 23:55
Pollen is very low in Derry today.
Tomorrow eases off.
Tree
None
Index value 0 of 5.
Weed
None
Index value 0 of 5.
Derry sits in Derry City and Strabane and takes its pollen pattern from the Northern Ireland forecast region. Around 83,700 people live here. Hay fever sufferers should track all three pollen types from March through August.
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 Derry
The pollen season in Derry 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 Derry runs from March to June. It peaks in April.
- Grass pollen in Derry runs from May to September. It peaks in July.
- Weed pollen in Derry runs from July to October. It peaks in August.
See the full UK pollen calendar or read when hay fever season starts and ends.