Grass Pollen Count in Viana do Castelo, Portugal — Today

Updated Saturday, November 7, 2026

Pollen by type in Viana do Castelo

What is the grass pollen count in Viana do Castelo today?

The Viana do Castelo 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.

Viana do Castelo’s overall pollen count today is 13 (Low) across all types. See the full Viana do Castelo pollen count for the overall index and every type together.

Viana do Castelo Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 713Low
Sunday, November 815Low
Monday, November 99Low
Tuesday, November 109Low
Wednesday, November 119Low

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 Viana do Castelo’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Viana do Castelo’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 Viana do Castelo 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 Mediterranean pattern, the plants that typically shape this city’s year are winter cypress and early hazel, spring grasses and olive, and late-summer weeds spread across a long, mild season.

Plants affecting Viana do Castelo now — grass pollen

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

In the Mediterranean pattern, the plants that typically shape this city’s year are winter cypress and early hazel, spring grasses and olive, and late-summer weeds spread across a long, mild season — 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 build from spring and peak from April into June, earlier in the south. This month sits outside the usual grass pollen window for the Mediterranean pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. No Portugal allergy season guide is published yet, so the seasonal context here follows the Mediterranean regional pattern.

Viana do Castelo allergies today

Viana do Castelo allergies today are set by the same reading as the Viana do Castelo pollen count today: the Total Pollen Index is 13 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Viana do Castelo allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Viana do Castelo.

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

Viana do Castelo tree pollen count

Viana do Castelo ragweed pollen count

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

See Viana do Castelo 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 Viana do Castelo, Portugal

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).