Grass
None
Index value 0 of 5.
Saturday 24 October Updated 18:40
No pollen in HP (Hemel Hempstead) today.
Tomorrow stays at this level.
Tree
None
Index value 0 of 5.
Weed
None
Index value 0 of 5.
HP covers part of East of England and follows its regional pollen pattern closely.
Tree pollen here is dominated by oak, ash and silver birch, with grass led by ryegrass and timothy and weeds by nettle and plantain.
Tree pollen typically peaks in April. Grass counts are highest from June. The dry, flat farmland tends to give grass pollen a long run from late May through July.
For the wider regional view see East of England, or browse every area we cover.
Hay fever season in HP (Hemel Hempstead)
The pollen season in HP (Hemel Hempstead) runs from February to October. The worst months are typically April, June, July and August.
| Pollen | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tree pollen | Jan: none | Feb: low | Mar: active | Apr: peak | May: active | 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: active | Jun: peak | Jul: peak | Aug: low | Sep: none | Oct: none | Nov: none | Dec: none |
| Weed pollen | Jan: none | Feb: none | Mar: none | Apr: none | May: none | Jun: low | Jul: active | Aug: peak | Sep: active | Oct: low | Nov: none | Dec: none |
- Tree pollen in HP (Hemel Hempstead) runs from February to June. It peaks in April.
- Grass pollen in HP (Hemel Hempstead) runs from May to August. It peaks in June.
- Weed pollen in HP (Hemel Hempstead) runs from June to October. It peaks in August.
See the full UK pollen calendar or read when hay fever season starts and ends.