Grass Pollen Count in Alphen aan den Rijn, Netherlands — Today

Updated Saturday, November 7, 2026

Pollen by type in Alphen aan den Rijn

What is the grass pollen count in Alphen aan den Rijn today?

The Alphen aan den Rijn grass pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Alphen aan den Rijn’s overall pollen count today is 36 (Low) across all types. See the full Alphen aan den Rijn pollen count for the overall index and every type together.

Alphen aan den Rijn Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 736Low
Sunday, November 817Low
Monday, November 935Low
Tuesday, November 1035Low
Wednesday, November 1125Low

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 Alphen aan den Rijn’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Alphen aan den Rijn’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 Alphen aan den Rijn is 0.6 (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 Alphen aan den Rijn now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Alphen aan den Rijn. The type summary stands: grass pollen reads 0.6 (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 grass pollen level means

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

Enjoy outdoor activities.

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 Netherlands allergy season guide is published yet, so the seasonal context here follows the Atlantic West regional pattern.

Alphen aan den Rijn allergies today

Alphen aan den Rijn allergies today are set by the same reading as the Alphen aan den Rijn pollen count today: the Total Pollen Index is 36 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Alphen aan den Rijn allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Alphen aan den Rijn.

Allergies in Alphen aan den Rijn follow the Netherlands calendar set out on the full Alphen aan den Rijn 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 Alphen aan den Rijn 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 Alphen aan den Rijn allergy forecast for the grass pollen season: it shows whether Alphen aan den Rijn 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 Alphen aan den Rijn pollen count — all types, the overall index and today’s ranking context

Alphen aan den Rijn tree pollen count

Alphen aan den Rijn ragweed pollen count

See how Alphen aan den Rijn ranks in today's pollen count rankings — the worst cities for allergies today

See Alphen aan den Rijn 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 Alphen aan den Rijn, Netherlands

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).