Grass
Very low
Index value 1 of 5.
Grass active.
Saturday 15 August Updated 23:57
Pollen is low in Farnworth today.
Tomorrow stays at this level.
Tree
None
Index value 0 of 5.
Weed
Low
Index value 2 of 5.
Mugwort active.
Farnworth sits in Borough of Bolton and takes its pollen pattern from the North West England forecast region. Around 25,700 people live here. Hay fever sufferers should track all three pollen types from March through August.
Tree pollen here is dominated by silver birch, oak and alder, with grass led by ryegrass and cocksfoot and weeds by nettle.
Tree pollen typically peaks in April. Grass counts are highest from June into early July. Damper conditions can suppress airborne grains, but birch can spike sharply on dry April days.
For the wider regional view see North West England, or browse every area we cover.
Hay fever season in Farnworth
The pollen season in Farnworth 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 Farnworth runs from March to June. It peaks in April.
- Grass pollen in Farnworth runs from May to September. It peaks in July.
- Weed pollen in Farnworth runs from July to October. It peaks in August.
See the full UK pollen calendar or read when hay fever season starts and ends.