Grass Pollen Count in Colwyn Bay, United Kingdom — Today

Updated Saturday, November 7, 2026

Pollen by type in Colwyn Bay

What is the grass pollen count in Colwyn Bay today?

The Colwyn Bay grass pollen index today is 1 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Colwyn Bay’s overall pollen count today is 20 (Low) across all types. See the full Colwyn Bay pollen count for the overall index and every type together.

Colwyn Bay Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 720Low
Sunday, November 820Low
Monday, November 923Low
Tuesday, November 1010Low
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 Colwyn Bay’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Colwyn Bay’s grass pollen

The modelled data reports grass as one combined index — there is no species-by-species split for grass anywhere in the data, so this page does not invent one. Today’s modelled grass index for Colwyn Bay is 1 (Low), and the 5-day overall trend above shows the shape of the week.

As regional context only — not as today’s readings — 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.

Plants affecting Colwyn Bay now — grass pollen

  • Grasses (grass): Universal Pollen Index 1 (Very Low) — out of season

Plant detail: Google Pollen API. These readings are on Google’s Universal Pollen Index scale, a separate scale from the grass pollen counts above.

What this grass pollen level means

Google’s Pollen API rates grass pollen very low today.

Pollen levels are very low right now. It's a great day to enjoy the outdoors!

Grasses hold from late May into July, peaking in late spring and early summer. This month sits outside the usual grass pollen window for the Atlantic West pattern, so today’s grass 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.

Colwyn Bay allergies today

Colwyn Bay allergies today are set by the same reading as the Colwyn Bay pollen count today: the Total Pollen Index is 20 (Low), and the grass pollen index on this page is 1 (Low) of it. When people ask about Colwyn Bay allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Colwyn Bay.

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

Colwyn Bay tree pollen count

Colwyn Bay ragweed pollen count

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

See Colwyn Bay on the pollen map

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

Worst cities for allergies

Grass pollen season

Find an allergist in Colwyn Bay, 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).