Grass Pollen Count in Héron, Belgium — Today

Updated Saturday, November 7, 2026

Pollen by type in Héron

What is the grass pollen count in Héron today?

The Héron 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.

Héron’s overall pollen count today is 42 (Moderate) across all types. See the full Héron pollen count for the overall index and every type together.

Héron is in Province de Liège, Wallonia, Belgium. Its population is 4,305 (GeoNames).

Héron Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 742Moderate
Sunday, November 845Moderate
Monday, November 941Moderate
Tuesday, November 1041Moderate
Wednesday, November 1141Moderate

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 Héron’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Héron’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 Héron 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 Continental West pattern, the plants that typically shape this city’s year are early hazel and alder, a birch-led spring, late-spring grasses, and late-summer mugwort and ragweed.

Plants affecting Héron now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Héron. The type summary stands: grass pollen reads 0.6 (Low) today.

In the Continental West pattern, the plants that typically shape this city’s year are early hazel and alder, a birch-led spring, late-spring grasses, and late-summer mugwort and ragweed — 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 May through July, cresting in late May and June. This month sits outside the usual grass pollen window for the Continental West pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. No Belgium allergy season guide is published yet, so the seasonal context here follows the Continental West regional pattern.

Héron allergies today

Héron allergies today are set by the same reading as the Héron pollen count today: the Total Pollen Index is 42 (Moderate), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Héron allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Héron.

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

Héron tree pollen count

Héron ragweed pollen count

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

See Héron 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 Héron, Belgium

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).