Tree Pollen Count in Katwijk aan den Rijn, Netherlands — Today

Pollen by type in Katwijk aan den Rijn

• Katwijk aan den Rijn grass pollen count
• Katwijk aan den Rijn ragweed pollen count
• Katwijk aan den Rijn pollen count

What is the tree pollen count in Katwijk aan den Rijn today?

The Katwijk aan den Rijn tree pollen index today is 16 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

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

Katwijk aan den Rijn is in Gemeente Katwijk, South Holland, The Netherlands. Its population is 5,940 (GeoNames).

Katwijk aan den Rijn Tree Pollen Count: 5-Day Forecast

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

Species driving Katwijk aan den Rijn’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 16 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Katwijk aan den Rijn now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Katwijk aan den Rijn. The type summary stands: tree pollen reads 16 (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 Netherlands allergy season guide is published yet, so the seasonal context here follows the Atlantic West regional pattern.

Katwijk aan den Rijn allergies today

Katwijk aan den Rijn allergies today are set by the same reading as the Katwijk aan den Rijn pollen count today: the Total Pollen Index is 36 (Low), and the tree pollen index on this page is 16 (Low) of it. When people ask about Katwijk 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 Katwijk aan den Rijn.

Allergies in Katwijk aan den Rijn follow the Netherlands calendar set out on the full Katwijk 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 Katwijk aan den Rijn 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 Katwijk aan den Rijn allergy forecast for the tree pollen season: it shows whether Katwijk 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.