Tree Pollen Count in Castlederg, United Kingdom — Today
Updated Saturday, November 7, 2026
Pollen by type in Castlederg
What is the tree pollen count in Castlederg today?
The Castlederg tree pollen index today is 4 (Low) on Pollen Atlas’s modelled 0–100 scale. Low
Modelled pollen risk index — not a measured count.
Castlederg’s overall pollen count today is 15 (Low) across all types. See the full Castlederg pollen count for the overall index and every type together.
Castlederg is in Derry City and Strabane, Northern Ireland, United Kingdom. Its population is 2,822 (GeoNames).
Castlederg Tree Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 15 | Low |
| Sunday, November 8 | 20 | Low |
| Monday, November 9 | 22 | Low |
| Tuesday, November 10 | 22 | Low |
| Wednesday, November 11 | 24 | Low |
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 Castlederg’s overall trend across the week. Today’s tree pollen reading is the headline above.
Species driving Castlederg’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 4 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.
Plants affecting Castlederg now — tree pollen
Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Castlederg. The type summary stands: tree pollen reads 4 (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 United Kingdom allergy season guide is published yet, so the seasonal context here follows the Atlantic West regional pattern.
Castlederg allergies today
Castlederg allergies today are set by the same reading as the Castlederg pollen count today: the Total Pollen Index is 15 (Low), and the tree pollen index on this page is 4 (Low) of it. When people ask about Castlederg allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Castlederg.
Allergies in Castlederg follow the United Kingdom calendar set out on the full Castlederg 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 Castlederg 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 Castlederg allergy forecast for the tree pollen season: it shows whether Castlederg 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 Castlederg pollen count — all types, the overall index and today’s ranking context
Castlederg ragweed pollen count
See how Castlederg ranks in today's pollen count rankings — the worst cities for allergies today
See Castlederg on the pollen map
Every pollen type, with photos and seasons: the pollen directory
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).