Tree Pollen Count in Castlefin, Ireland

Last updated Sunday, November 8, 2026

This page shows the most recent reading available for Castlefin — from Sunday, November 8, 2026 (1 day ago) — not today's reading.

Pollen by type in Castlefin

What is the tree pollen count in Castlefin today?

The Castlefin tree pollen index today is 6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Castlefin’s overall pollen count today is 12 (Low) across all types. See the full Castlefin pollen count for the overall index and every type together.

Castlefin is in County Donegal, Ulster, Ireland. Its population is 787 (GeoNames).

Castlefin Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Sunday, November 812Low
Monday, November 914Low
Tuesday, November 1014Low
Wednesday, November 1114Low
Thursday, November 1215Low

Pollen Atlas models the daily detail as an overall index: day-by-day splits by individual pollen type are not part of the modelled data, so this table shows Castlefin’s overall trend across the week. Today’s tree pollen reading is the headline above.

Species driving Castlefin’s tree pollen

Species-level counts are not part of the modelled data Pollen Atlas publishes — the modelled index is reported per pollen type, not per species — so this section gives the type summary: tree pollen reads 6 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Castlefin now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Castlefin. The type summary stands: tree pollen reads 6 (Low) today.

In the Atlantic West pattern, the plants that typically shape this city’s year are early hazel and alder, a spring birch and oak wave, late-spring and summer grasses, and a modest late-summer weed finish — named here as regional context only, not as today’s readings.

Plant detail returns here automatically on any day the feed includes it.

What this tree pollen level means

Low risk. Keep windows open; consider allergy meds only if sensitive.

Enjoy outdoor activities.

Hazel and alder can open as early as February in mild winters, and the main tree wave — birch, then oak — builds through spring to a May peak. This month sits outside the usual tree pollen window for the Atlantic West pattern, so today’s tree pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. No Ireland allergy season guide is published yet, so the seasonal context here follows the Atlantic West regional pattern.

Castlefin allergies today

Castlefin allergies today are set by the same reading as the Castlefin pollen count today: the Total Pollen Index is 12 (Low), and the tree pollen index on this page is 6 (Low) of it. When people ask about Castlefin allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Castlefin.

Allergies in Castlefin follow the Ireland calendar set out on the full Castlefin page — the chapters, the plants behind them, and the 5-day forecast show whether today is typical for the season or an exception to it. If you are checking allergies today in Castlefin before heading outdoors, the tree pollen split on this page is the part to read: it shows whether this pollen type is doing the work today, not just how high the total sits.

Read the five-day overall trend above as the Castlefin allergy forecast for the tree pollen season: it shows whether Castlefin allergies are set to ease or build across the week, day by day — the days to plan outdoor time around are the ones where the overall index steps down, not just today.

See the full Castlefin pollen count — all types, the overall index and today’s ranking context

Castlefin grass pollen count

Castlefin ragweed pollen count

See how Castlefin ranks in today's pollen count rankings — the worst cities for allergies today

See Castlefin on the pollen map

Every pollen type, with photos and seasons: the pollen directory

Worst cities for allergies

Tree pollen season

Find an allergist in Castlefin, Ireland

Pollen indexes: a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data. Plant detail: Google Pollen API. Index values are modelled, not measured counts. Sources: CDC/NAB; USA-NPN; GBIF (CC BY); ESA WorldCover (CC BY 4.0).