Ragweed Pollen Count in Harlesden, United Kingdom — Today

Updated Saturday, November 7, 2026

This reading is the forecast point for Harlesden — 2 nearby places use the same point; Harlesden is 1.1 km from it.

Pollen by type in Harlesden

What is the ragweed pollen count in Harlesden today?

The Harlesden ragweed pollen index today is 36 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Harlesden today. See the full Harlesden pollen count for the overall index and every type together.

Harlesden is in Greater London, England, United Kingdom. Its population is 17,162 (GeoNames).

Harlesden Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 731Low
Sunday, November 830Low
Monday, November 934Low
Tuesday, November 1023Low
Wednesday, November 1114Low

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 Harlesden’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Harlesden’s ragweed 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: ragweed pollen reads 36 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Harlesden now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Harlesden. The type summary stands: ragweed pollen reads 36 (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 ragweed pollen level means

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

Enjoy outdoor activities.

Weeds are the minor closing act — mugwort through late summer, with ragweed localised and generally light this far west. This month sits outside the usual ragweed pollen window for the Atlantic West pattern, so today’s ragweed 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.

Harlesden allergies today

Harlesden allergies today are set by the same reading as the Harlesden pollen count today: the Total Pollen Index is 31 (Low), and the ragweed pollen index on this page is 36 (Low) of it. When people ask about Harlesden allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Harlesden.

Allergies in Harlesden follow the United Kingdom calendar set out on the full Harlesden 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 Harlesden before heading outdoors, the ragweed 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 Harlesden allergy forecast for the ragweed pollen season: it shows whether Harlesden 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 Harlesden pollen count — all types, the overall index and today’s ranking context

Harlesden tree pollen count

Harlesden grass pollen count

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

See Harlesden on the pollen map

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

Worst cities for allergies

Ragweed season

Find an allergist in Harlesden, United Kingdom

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).