Brottby, Sweden Pollen Count
Brottby, Sweden · Last updated Sunday, November 8, 2026
This page shows the most recent reading available for Brottby — from Sunday, November 8, 2026 (1 day ago) — not today's reading.
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).
Brottby, Sweden
Weeds Index
How active weeds pollen is today (0–100).
Brottby, Sweden
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Brottby Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Brottby residents check each morning
The Brottby pollen count today is 44 (Moderate). The main driver is Ragweed, with weed pollen at 44 today. That total sits on a narrow base: weed pollen is 44 while tree pollen is just 0.6 and grass pollen 7. Plant-by-plant detail for Brottby, Sweden follows, along with the outlook for the days ahead. Pollen Atlas updated this count on Sunday, November 8, 2026.
A Moderate band means the Total Pollen Index sits in the middle of the 0–100 scale — neither a quiet day nor a peak day. On moderate days the split usually explains the total: one or two categories do most of the work while the others stay low. The Brottby split above shows exactly which categories those are today, and the forecast below shows whether the moderate reading is a plateau or a step toward a higher band.
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 Brottby pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Brottby residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Brottby pollen count today?
The Brottby pollen count today is 44 out of 100 (Moderate) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Brottby: this page is updated every morning with the day’s modelled reading.
Brottby allergies today
Brottby allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 44 (Moderate), driven mainly by Ragweed. When people ask about Brottby allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Brottby.
Allergies in Brottby follow the Sweden 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 Brottby 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 Brottby allergy forecast: today reads 44 (Moderate), and the day-by-day outlook shows whether Brottby 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 Brottby today records is this same combined reading — tree, grass, weed and mold in one index.
The Brottby allergy count today is 44 (Moderate) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Brottby: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Sunday, November 8 | 44 | Moderate |
| Monday, November 9 | 49 | Moderate |
| Tuesday, November 10 | 48 | Moderate |
| Wednesday, November 11 | 31 | Low |
| Thursday, November 12 | 22 | Low |
Pollen Atlas forecasts Brottby’s pollen count to peak on Monday at 49 (Moderate) over the next 5 days.
Pollen by type in Brottby
What is driving Brottby’s pollen today
The shape of today’s 44 (Moderate) is set by weed pollen at 44 (Moderate on its own scale) — about 85% of the four category readings added together, 37 points clear of the next category, grass pollen at 7. 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 runs against the usual calendar — the Sweden weed chapter runs August to September — so today’s lead is the model outranking the pattern, and this page reports the modelled reading first.
Plant-level detail is not in today’s feed for Brottby, 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 22 to 49, changing band 1 time. Today’s 44 sits 5 points above the window’s average of 38.8 — a wide-open window, in which the day matters more than the average.
Plants affecting Brottby now
Detailed plant-by-plant readings for Brottby 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 0.6 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 7 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 44 (Moderate).
In the Nordic & Baltic North pattern, the plants that typically shape this city’s year are a compressed birch-led spring, a brief early-summer grass peak, and a short late-summer mugwort finish — 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.
Brottby pollen through the year
Chapter by chapter, the Brottby pollen year runs like this:
- The season is compressed: alder stirs first, and birch — the region’s signature spring pollen — peaks through May into early June.
- Grasses own a brief early-summer peak, cresting around the first hay cutting in June and July.
- Mugwort runs through August, and ragweed is scarce at these latitudes — the late window is short and light.
- Mold rises late in the short season, from decaying vegetation as the brief summer closes.
No Sweden allergy season guide is published yet, so this page does not single out signature pollens for Brottby — the calendar above is the Nordic & Baltic North regional pattern, and the plant detail on this page names what today’s feed actually records.
November falls between the main chapters of the Sweden pollen year — the tail of one and the approach of the next — so the calendar alone explains little today, and the modelled split above carries the story. Between them, the three chapters cover 6 months of the Sweden year, April to September — a compressed season, which is why its chapters arrive in quick succession. No Sweden allergy season guide is published yet — this calendar follows the Nordic & Baltic North regional pattern. See Brottby pollen count rankings and Brottby on the pollen heatmap.
How to read this index
Pollen Atlas reports the Brottby 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 Brottby, Sweden 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.
Brottby in today’s national picture
At 44 (Moderate), Brottby ranks joint 39872nd of the 217874 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Tignes, France at 66, and the lowest is Roncaccio Superiore, Italy at 5. The whole table spans 61 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Brottby: Karby, Sweden (1 km away) reads 44 (Moderate); Lindholmen, Sweden (8 km away) reads 41 (Moderate); Vallentuna, Sweden (10 km away) reads 40 (Low). Brottby reads exactly level with its nearest tracked neighbour today. Across Sweden’s 2026 tracked cities, today runs from 10 in Abisko to 62 in Kävlinge.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Brottby resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Brottby, Sweden 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.
Brottby in its local area
Brottby is in Vallentuna Kommun, Stockholm, Sweden. Its population is 224 (GeoNames).
Across Sweden’s 2026 tracked cities, Brottby ranks joint 641st today.
Like every Pollen Atlas city page, the Brottby, Sweden pollen count is refreshed each morning.
Nearby cities
- Karby pollen count (1 km away)
- Lindholmen pollen count (8 km away)
- Vallentuna pollen count (10 km away)
- Åkersberga pollen count (10 km away)
- Täljö pollen count (10 km away)
- Kårsta pollen count (11 km away)
From Pollen Atlas News
See how Brottby 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).