Pollen count in Down today
Updated 00:05. The forecast updates every six hours.
Down pollen forecast for today and the next two days
Sunday, 18 October
Quiet season
Pollen season is over for now in Down. Tree pollen usually returns in February.
106 days until tree pollen season usually starts.
- Grass
- Low
- Tree
- Low
- Weed
- Low
Dry, 12°C high, Light wind
What to do today
- NowNothing to plan around outsidePollen stays very low until the tree season.
- IndoorsSneezing in winter?It is often dust mites or mould. Air rooms for ten minutes a day, dry clothes away from bedrooms and wash bedding hot each week.
- JanuaryGet ready earlyIf spring is hard for you, ask your pharmacist or GP in January about starting treatment before the season.
- Any timeGet a heads-upSign up for alerts and we'll email you when your pollen season starts.
Monday, 19 October
Quiet season
Pollen season is over for now in Down. Tree pollen usually returns in February.
105 days until tree pollen season usually starts.
- Grass
- Low
- Tree
- Low
- Weed
- Low
Dry, 13°C high, Breezy
What to do tomorrow
- NowNothing to plan around outsidePollen stays very low until the tree season.
- IndoorsSneezing in winter?It is often dust mites or mould. Air rooms for ten minutes a day, dry clothes away from bedrooms and wash bedding hot each week.
- JanuaryGet ready earlyIf spring is hard for you, ask your pharmacist or GP in January about starting treatment before the season.
- Any timeGet a heads-upSign up for alerts and we'll email you when your pollen season starts.
Tuesday, 20 October
Quiet season
Pollen season is over for now in Down. Tree pollen usually returns in February.
104 days until tree pollen season usually starts.
- Grass
- Low
- Tree
- Low
- Weed
- Low
Rain expected, 13°C high, Breezy
What to do on Tuesday
- NowNothing to plan around outsidePollen stays very low until the tree season.
- IndoorsSneezing in winter?It is often dust mites or mould. Air rooms for ten minutes a day, dry clothes away from bedrooms and wash bedding hot each week.
- JanuaryGet ready earlyIf spring is hard for you, ask your pharmacist or GP in January about starting treatment before the season.
- Any timeGet a heads-upSign up for alerts and we'll email you when your pollen season starts.
Your outings
Tell us when you're usually outside, like the school run or a lunchtime walk, and we'll check each one against the pollen. Saved on this device only.
Know someone with hay fever?
Towns in Down
Each town has its own forecast. Some days they differ from the county.
Breathing today
Pollen plus what else is in the air in Down.
Asthma day
Good day
Clean air and little pollen.
Air quality
Fair
European index 24
Fine particles
Fair
PM2.5 up to 6 µg/m³
Ozone
Fair
Up to 68 µg/m³
UV
Low
No sun cream needed
Air quality and UV come from the same Copernicus forecast as the pollen levels. It is a forecast, not a measurement.
Your season in Down
Pollen season is over for now. Tree pollen usually returns in February.
In 2026, Down had 13 High pollen days, the 29th most of 32 counties. See how every county compared
Past 30 days
See past forecastsWhen each pollen is in the air
- Tree: February to May, birch peaks in April.
- Grass: May to July, the main hay fever season.
- Weed: June to September.
Help in Down
Allergy services near you
Not sure where to start? A pharmacist can suggest what might help. See your GP if symptoms are hard to manage.
Tip of the week
Lose Those Leaves
Fallen leaves can be a hotspot for mould growth. Regularly clear them from your garden and outdoor spaces to reduce mould spore proliferation.
Questions about pollen in Down
What are the common hay fever symptoms in Down?
Hay fever symptoms in Down are influenced by the county's varied terrain and coastal location. The Mourne Mountains create rain shadow effects, making parts of Down relatively dry with concentrated pollen. Strangford Lough's shores offer maritime relief. Common symptoms include sneezing, runny or blocked nose, itchy and watery eyes, and an itchy throat. During prolonged dry spells, symptoms may be more persistent. The rural setting means exposure to agricultural pollen sources is common during farming activities.
When is pollen season in Down, Ireland?
Tree pollen season typically starts slightly later in Ulster, running from late February to May. In Down, the key local trees are oak, beech, horse chestnut, which affect spring pollen levels. Grass pollen season peaks in June and July, with the Mourne Mountains and Strangford Lough contributing to local concentrations. Weed pollen, including nettle and dock, can be present from June to September. Our daily forecasts help you track these changing conditions throughout the seasons.
How does weather affect pollen levels in Down?
Down benefits from relatively mild, settled weather in the Irish Sea rain shadow, though this can mean more persistent dry, high-pollen periods. Sea breezes along the coast can help disperse pollen, making coastal areas preferable during high pollen days. Warm, dry, and windy days typically see higher pollen counts as conditions favour pollen release and dispersal. During dry spells, pollen levels can build up over several days.
Does rain reduce pollen levels in Down?
Yes, rain generally reduces airborne pollen levels in Down by washing particles from the air. During the drier periods common in Down, rain showers provide welcome relief. However, thunderstorms can break pollen grains into smaller particles that penetrate deeper into the lungs. Light, steady rain is best for pollen relief. Check our daily forecast to plan activities around weather patterns.
How can I manage hay fever in Down?
The Mourne coastal path and Strangford Lough shores provide lower-pollen alternatives to inland walks. Newcastle and Rostrevor offer good facilities. General tips include checking our daily pollen forecast before planning outdoor activities, staying indoors during peak pollen times (usually mid-morning and early evening), wearing wraparound sunglasses outdoors, and showering after being outside. The coastal areas of Down typically have lower pollen levels, especially when sea breezes are blowing. Consult your pharmacist or GP about antihistamines and other treatments tailored to your symptoms.