Yamagata, Japan Pollen Count
Yamagata, Japan · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Yamagata — from Friday, November 6, 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).
Yamagata, Japan
Weeds Index
How active weeds pollen is today (0–100).
Yamagata, Japan
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Yamagata Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Yamagata residents check each morning
The Yamagata pollen count today is 7 (Low). The main driver is Ragweed, with weed pollen at 9 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 9. 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 Friday, November 6, 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 Yamagata 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 Yamagata pollen forecast below — it is currently mixed, with Saturday the highest day in the window.
This is the pollen count Yamagata residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Yamagata pollen count today?
The Yamagata pollen count today is 7 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Yamagata: this page is updated every morning with the day’s modelled reading.
Yamagata allergies today
Yamagata allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 7 (Low), driven mainly by Ragweed. When people ask about Yamagata allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Yamagata.
Allergies in Yamagata follow the Japan 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 Yamagata 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 Yamagata allergy forecast: today reads 7 (Low), and the day-by-day outlook shows whether Yamagata 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 Yamagata today records is this same combined reading — tree, grass, weed and mold in one index.
The Yamagata allergy count today is 7 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Yamagata: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 7 | Low |
| Saturday, November 7 | 15 | Low |
| Sunday, November 8 | 9 | Low |
| Monday, November 9 | 15 | Low |
| Tuesday, November 10 | 14 | Low |
Pollen Atlas forecasts Yamagata’s pollen count to peak on Saturday at 15 (Low) over the next 5 days.
Pollen by type in Yamagata
What is driving Yamagata’s pollen today
The shape of today’s 7 (Low) is set by weed pollen at 9 (Low on its own scale) — about 88% of the four category readings added together, 8.4 points clear of the next category, tree pollen at 0.6. 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 a modelled reading, reported as modelled — no regional calendar is asserted for Japan, and the modelled value outranks any general seasonal expectation.
Plant-level detail is not in today’s feed for Yamagata, 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 7 to 15, never changing band. Today’s 7 sits 5 points below the window’s average of 12 — a moving window, worth reading day by day rather than from the average.
Plants affecting Yamagata now
Detailed plant-by-plant readings for Yamagata 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 0.6 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 9 (Low).
In the Global pattern, the plants that shape this city’s year vary with its local climate and vegetation, and no single regional calendar is published for this area — 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.
Yamagata pollen through the year
The Yamagata pollen year runs in chapters, set by the Global pattern and the Japan calendar. Trees come first: tree pollen seasons vary with local climate and vegetation, so this page reports the measured readings first and treats any calendar as background only. Grasses take the middle of the year: grass pollen seasons vary with local climate and vegetation, and the measured value outranks any general seasonal expectation. Weeds close it out: weed pollen seasons vary with local climate and vegetation, and no regional calendar is asserted for this area.
No Japan allergy season guide is published yet, so this page does not single out signature pollens for Yamagata — the calendar above is the Global regional pattern, and the plant detail on this page names what today’s feed actually records.
November in Yamagata is reported from its modelled readings, not from a regional calendar — no regional calendar is asserted for Japan, so the calendar alone explains little today, and the modelled split above carries the story. No Japan allergy season guide is published yet — this calendar follows the Global regional pattern. See Yamagata pollen count rankings and Yamagata on the pollen heatmap.
How to read this index
Pollen Atlas reports the Yamagata 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 Yamagata, Japan 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.
Yamagata in today’s national picture
At 7 (Low), Yamagata ranks joint 84544th 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 Yamagata: Sendai, Japan (44 km away) reads 13 (Low); Fukushima, Japan (54 km away) reads 8 (Low); Kōriyama, Japan (93 km away) reads 15 (Low). Yamagata reads 6 points lower than its nearest tracked neighbour today. Across Japan’s 131 tracked cities, today runs from 5 in Sapporo to 31 in Kawagoe.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Yamagata resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Yamagata, Japan 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.
Yamagata in its local area
Yamagata is in Yamagata Shi, Yamagata, Japan. Its population is 248,772 (GeoNames).
Across Japan’s 131 tracked cities, Yamagata ranks joint 128th today.
Like every Pollen Atlas city page, the Yamagata, Japan pollen count is refreshed each morning.
Nearby cities
- Sendai pollen count (44 km away)
- Fukushima pollen count (54 km away)
- Kōriyama pollen count (93 km away)
- Niigata pollen count (121 km away)
- Iwaki pollen count (139 km away)
- Nagaoka pollen count (159 km away)
From Pollen Atlas News
See how Yamagata 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).