Ragweed Pollen Count in Rio Maior, Portugal — Today

Updated Saturday, November 7, 2026

Pollen by type in Rio Maior

What is the ragweed pollen count in Rio Maior today?

The Rio Maior ragweed pollen index today is 20 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Rio Maior today. See the full Rio Maior pollen count for the overall index and every type together.

Rio Maior is in Rio Maior, Santarém, Portugal. Its population is 12,064 (GeoNames).

Rio Maior Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 734Low
Sunday, November 823Low
Monday, November 914Low
Tuesday, November 1013Low
Wednesday, November 1113Low

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 Rio Maior’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Rio Maior’s ragweed 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: ragweed pollen reads 20 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Rio Maior now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Rio Maior. The type summary stands: ragweed pollen reads 20 (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 ragweed pollen level means

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

Enjoy outdoor activities.

Weeds — pellitory through the warm months and ragweed in late summer where it has spread — close a long season that can run into November. This month sits inside the ragweed pollen window for the Mediterranean pattern, so today’s ragweed pollen reading should be judged against that chapter of the Portugal year. No Portugal allergy season guide is published yet, so the seasonal context here follows the Mediterranean regional pattern.

Rio Maior allergies today

Rio Maior allergies today are set by the same reading as the Rio Maior pollen count today: the Total Pollen Index is 34 (Low), and the ragweed pollen index on this page is 20 (Low) of it. When people ask about Rio Maior allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Rio Maior.

Allergies in Rio Maior follow the Portugal calendar set out on the full Rio Maior 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 Rio Maior before heading outdoors, the ragweed 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 Rio Maior allergy forecast for the ragweed pollen season: it shows whether Rio Maior 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 Rio Maior pollen count — all types, the overall index and today’s ranking context

Rio Maior tree pollen count

Rio Maior grass pollen count

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

See Rio Maior on the pollen map

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

Worst cities for allergies

Ragweed season

Find an allergist in Rio Maior, 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).