Tree Pollen Count in Guillerval, France

Last updated Sunday, November 8, 2026

This page shows the most recent reading available for Guillerval — from Sunday, November 8, 2026 (1 day ago) — not today's reading.

This reading is the forecast point shared with Ormoy-la-Rivière, France — 3 nearby places use the same point; Guillerval is 3 km from it.

Pollen by type in Guillerval

What is the tree pollen count in Guillerval today?

The Guillerval tree pollen index today is 32 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Guillerval’s overall pollen count today is 59 (Moderate) across all types. See the full Guillerval pollen count for the overall index and every type together.

Guillerval is in Essonne, Île-de-France, France. Its population is 752 (GeoNames).

Guillerval Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Sunday, November 859Moderate
Monday, November 946Moderate
Tuesday, November 1029Low
Wednesday, November 1143Moderate
Thursday, November 1257Moderate

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 Guillerval’s overall trend across the week. Today’s tree pollen reading is the headline above.

Species driving Guillerval’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 32 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Guillerval now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Guillerval. The type summary stands: tree pollen reads 32 (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 tree pollen level means

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

Enjoy outdoor activities.

Hazel and alder open from February, and birch leads the spring peak through April and into May. This month sits outside the usual tree pollen window for the Continental West pattern, so today’s tree pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. No France allergy season guide is published yet, so the seasonal context here follows the Continental West regional pattern.

Guillerval allergies today

Guillerval allergies today are set by the same reading as the Guillerval pollen count today: the Total Pollen Index is 59 (Moderate), and the tree pollen index on this page is 32 (Low) of it. When people ask about Guillerval allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Guillerval.

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

Guillerval grass pollen count

Guillerval ragweed pollen count

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

See Guillerval on the pollen map

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

Worst cities for allergies

Tree pollen season

Find an allergist in Guillerval, France

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).