São Tiago de Custoias, Portugal Pollen Count Today
São Tiago de Custoias, Portugal · Updated Saturday, November 7, 2026
Pollen Overview
Today's overall pollen level and the dominant type (trees, weeds, grass, or mold).
Total Pollen Index
The combined pollen level across all types (0–100).
São Tiago de Custoias, Portugal
Weeds Index
How active weeds pollen is today (0–100).
São Tiago de Custoias, Portugal
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day São Tiago de Custoias Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count São Tiago de Custoias residents check each morning
The São Tiago de Custoias pollen count today is 21 (Low). The main driver is Ragweed, with weed pollen at 24 today. The full split is tree pollen 18, grass pollen 1, weed pollen 24. The sections below break that headline number down by plant, by day and by what the band means in practice. Pollen Atlas updated this count on Saturday, November 7, 2026.
A Low band on the Pollen Atlas index means the Total Pollen Index has stayed in the lower part of the 0–100 scale. Readings in this band are built from low individual category values rather than from one large spike, and the category split above matters more than the headline number: a low total can still contain one category, such as weed pollen or mold, reading noticeably higher than the rest, which is why the split is printed on every São Tiago de Custoias page.
Fall is ragweed season across most of the United States: ragweed plants release pollen from late summer into autumn, and weed pollen is typically the last major outdoor pollen category to fade as the weather cools. That pattern is why an autumn total is so often weed-led even when the headline number is low — tree and grass pollen have usually receded by then, leaving weed pollen, and on damp days mold, to make up most of what the index records.
To see whether today’s pollen level holds, check the 5-day São Tiago de Custoias pollen forecast below — it is currently easing, with Saturday the highest day in the window.
This is the pollen count São Tiago de Custoias residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the São Tiago de Custoias pollen count today?
The São Tiago de Custoias pollen count today is 21 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today São Tiago de Custoias: this page is updated every morning with the day’s modelled reading.
São Tiago de Custoias allergies today
São Tiago de Custoias allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 21 (Low), driven mainly by Ragweed. When people ask about São Tiago de Custoias allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for São Tiago de Custoias.
Allergies in São Tiago de Custoias follow the Portugal calendar set out below — the chapters, the plants behind them, and the 5-day forecast on this page show whether today is typical for the season or an exception to it. If you are checking allergies today in São Tiago de Custoias before heading outdoors, the split at the top of this page is the part to read: it shows which pollen is doing the work today, not just how high the total sits.
Read the five-day table on this page as the São Tiago de Custoias allergy forecast: today reads 21 (Low), and the day-by-day outlook shows whether São Tiago de Custoias allergies are set to ease or build across the week — the days to plan outdoor time around are the ones where the index steps down, not just today.
In practice, the allergy count São Tiago de Custoias today records is this same combined reading — tree, grass, weed and mold in one index.
The São Tiago de Custoias allergy count today is 21 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today São Tiago de Custoias: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 21 | Low |
| Sunday, November 8 | 15 | Low |
| Monday, November 9 | 10 | Low |
| Tuesday, November 10 | 9 | Low |
| Wednesday, November 11 | 9 | Low |
Pollen Atlas forecasts São Tiago de Custoias’s pollen count to peak on Saturday at 21 (Low) over the next 5 days.
Pollen by type in São Tiago de Custoias
What is driving São Tiago de Custoias’s pollen today
The shape of today’s 21 (Low) is set by weed pollen at 24 (Low on its own scale) — about 56% of the four category readings added together, 6 points clear of the next category, tree pollen at 18. A weed-led total is the classic late-year shape: tree and grass pollen have usually receded, leaving weed pollen — and on damp days mold — to make up most of what the index records. Weed pollen leading in November is the Portugal calendar working as expected — November falls in the closing weeks of the country’s weed chapter.
Plant-level detail is not in today’s feed for São Tiago de Custoias, so the drivers have to be read from the category split above — it shows how much of today’s total each category is actually carrying, and plant detail returns here automatically on any day the feed includes it.
Across the five-day window the Total Pollen Index runs from 9 to 21, never changing band. Today’s 21 sits 8 points above the window’s average of 12.8 — a moving window, worth reading day by day rather than from the average.
Plants affecting São Tiago de Custoias now
Detailed plant-by-plant readings for São Tiago de Custoias were not returned in today\u2019s source data, so this section summarises the pollen types the index above is built from instead of listing individual plants.
Tree pollen is one of the categories with a non-zero reading today, at 18 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 1 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 24 (Low).
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\u2019s measurements.
Plant detail returns here automatically on any day the source data includes it.
Every pollen type, with photos and seasons: the pollen directory.
São Tiago de Custoias pollen through the year
The São Tiago de Custoias pollen year runs in chapters, set by the Mediterranean pattern and the Portugal calendar. Trees come first: cypress opens the year in winter, hazel and alder follow early, and olive carries the spring peak from April into May. Grasses take the middle of the year: grasses build from spring and peak from April into June, earlier in the south. Weeds close it out: weeds — pellitory through the warm months and ragweed in late summer where it has spread — close a long season that can run into November.
No Portugal allergy season guide is published yet, so this page does not single out signature pollens for São Tiago de Custoias — the calendar above is the Mediterranean regional pattern, and the plant detail on this page names what today’s feed actually records.
November in São Tiago de Custoias sits inside the weed chapter of the Portugal year, in its closing weeks — the part of the calendar today’s readings should be judged against. Between them, the three chapters cover 10 months of the Portugal year, January to November — a long season by national standards, with only a short quiet gap. No Portugal allergy season guide is published yet — this calendar follows the Mediterranean regional pattern. See São Tiago de Custoias pollen count rankings and São Tiago de Custoias on the pollen heatmap.
How to read this index
Pollen Atlas reports the São Tiago de Custoias pollen count on a Total Pollen Index from 0 to 100, built from separate tree, grass and weed readings. The total is a summary, not an average of the three: a single strong category can lift it, and three quiet categories can hold it down even in a month when São Tiago de Custoias, Portugal pollen is usually more active. Index values are a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data, with plant detail by the Google Pollen API. The index is a modelled 0–100 scale, not a measured count, and figures update through the day, so a morning and an evening visit to this page can legitimately show different numbers.
São Tiago de Custoias in today’s national picture
At 21 (Low), São Tiago de Custoias ranks joint 46929th of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Beja, Portugal at 52, and the lowest is Los Ángeles de San Rafael, Spain at 5. The whole table spans 47 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around São Tiago de Custoias: Leça do Bailio, Portugal (1 km away) reads 21 (Low); São Mamede de Infesta, Portugal (2 km away) reads 21 (Low); Senhora da Hora, Portugal (2 km away) reads 16 (Low). São Tiago de Custoias reads exactly level with its nearest tracked neighbour today. Across Portugal’s 845 tracked cities, today runs from 6 in Porto Moniz to 52 in Beja.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one São Tiago de Custoias resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in São Tiago de Custoias, Portugal can test whether tree, grass, weed or mold is the category that matters for you — the four readings at the top of this page are the starting point for that conversation.
São Tiago de Custoias in its local area
São Tiago de Custoias is in Matosinhos, Porto, Portugal. Its population is 19,000 (GeoNames).
Across Portugal’s 845 tracked cities, São Tiago de Custoias ranks joint 375th today.
Like every Pollen Atlas city page, the São Tiago de Custoias, Portugal pollen count is refreshed each morning.
Nearby cities
- Leça do Bailio pollen count (1 km away)
- São Mamede de Infesta pollen count (2 km away)
- Senhora da Hora pollen count (2 km away)
- Ramalde do Meio pollen count (3 km away)
- Bairro Silva Braga pollen count (3 km away)
- Guifões pollen count (3 km away)
From Pollen Atlas News
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).