Porto, Portugal Pollen Count Today
Porto, 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).
Porto, Portugal
Weeds Index
How active weeds pollen is today (0–100).
Porto, Portugal
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Porto Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
This reading is the forecast point for Porto — 2 nearby places use the same point; Porto is 0.5 km from it.
Pollen count Porto residents check each morning
The Porto pollen count today is 14 (Low). The main driver is Ragweed, with weed pollen at 16 today. The full split is tree pollen 13, grass pollen 1, weed pollen 16. 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 Porto 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 Porto pollen forecast below — it is currently mixed, with Sunday the highest day in the window.
This is the pollen count Porto residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Porto pollen count today?
The Porto pollen count today is 14 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Porto: this page is updated every morning with the day’s modelled reading.
Porto allergies today
Porto allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 14 (Low), driven mainly by Ragweed. When people ask about Porto allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Porto.
Allergies in Porto 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 Porto 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 Porto allergy forecast: today reads 14 (Low), and the day-by-day outlook shows whether Porto 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 Porto today records is this same combined reading — tree, grass, weed and mold in one index.
The Porto allergy count today is 14 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Porto: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 14 | Low |
| Sunday, November 8 | 15 | Low |
| Monday, November 9 | 9 | Low |
| Tuesday, November 10 | 9 | Low |
| Wednesday, November 11 | 9 | Low |
Pollen Atlas forecasts Porto’s pollen count to peak on Sunday at 15 (Low) over the next 5 days.
Pollen by type in Porto
What is driving Porto’s pollen today
The shape of today’s 14 (Low) is set by weed pollen at 16 (Low on its own scale) — about 53% of the four category readings added together, 3 points clear of the next category, tree pollen at 13. 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 Porto, 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 15, never changing band. Today’s 14 sits 3 points above the window’s average of 11.2 — a moving window, worth reading day by day rather than from the average.
Plants affecting Porto now
Detailed plant-by-plant readings for Porto 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 13 (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 16 (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.
Porto pollen through the year
The Porto 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 Porto — the calendar above is the Mediterranean regional pattern, and the plant detail on this page names what today’s feed actually records.
November in Porto 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 Porto pollen count rankings and Porto on the pollen heatmap.
How to read this index
Pollen Atlas reports the Porto 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 Porto, 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.
Porto in today’s national picture
At 14 (Low), Porto ranks joint 71898th 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 Porto: Massarelos, Portugal (2 km away) reads 14 (Low); Ameal, Portugal (2 km away) reads 21 (Low); Bonjoia, Portugal (2 km away) reads 21 (Low). Porto 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 Porto resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in Porto, 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.
Porto in its local area
Porto is in Porto, Portugal. Its population is 252,687 (GeoNames).
Porto anchors the forecast-point group of 2 places that share this reading. Within the group, Porto ranks 2nd; across Portugal’s 845 tracked cities, it ranks joint 717th today.
Like every Pollen Atlas city page, the Porto, Portugal pollen count is refreshed each morning.
Nearby cities
- Massarelos pollen count (2 km away)
- Ameal pollen count (2 km away)
- Bonjoia pollen count (2 km away)
- Noeda pollen count (2 km away)
- Neiral pollen count (2 km away)
- Bela Vista pollen count (3 km away)
From Pollen Atlas News
See how Porto ranks in today's pollen count rankings — the worst cities for allergies today
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).