Bar Harbor, ME Pollen Count
Bar Harbor, ME · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Bar Harbor — 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).
Bar Harbor, ME
Weeds Index
How active weeds pollen is today (0–100).
Bar Harbor, ME
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Bar Harbor Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Bar Harbor residents check each morning
The Bar Harbor pollen count today is 6 (Low). The main driver is Ragweed, with weed pollen at 8 today. That total sits on a narrow base: weed pollen is 8 while tree pollen is just 0.6 and grass pollen 1. Plant-by-plant detail for Bar Harbor, ME follows, along with the outlook for the days ahead. 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 Bar Harbor 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 Bar Harbor pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Bar Harbor residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Bar Harbor pollen count today?
The Bar Harbor pollen count today is 6 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Bar Harbor: this page is updated every morning with the day’s modelled reading.
Bar Harbor allergies today
Bar Harbor allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 6 (Low), driven mainly by Ragweed. When people ask about Bar Harbor allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Bar Harbor.
Allergies in Bar Harbor follow the Maine 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 Bar Harbor 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 Bar Harbor allergy forecast: today reads 6 (Low), and the day-by-day outlook shows whether Bar Harbor 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 Bar Harbor today records is this same combined reading — tree, grass, weed and mold in one index.
The Bar Harbor allergy count today is 6 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Bar Harbor: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 6 | Low |
| Saturday, November 7 | 6 | Low |
| Sunday, November 8 | 6 | Low |
| Monday, November 9 | 13 | Low |
| Tuesday, November 10 | 10 | Low |
Pollen Atlas forecasts Bar Harbor’s pollen count to peak on Monday at 13 (Low) over the next 5 days.
Pollen by type in Bar Harbor
What is driving Bar Harbor’s pollen today
The shape of today’s 6 (Low) is set by weed pollen at 8 (Low on its own scale) — about 83% of the four category readings added together, 7 points clear of the next category, grass pollen at 1. 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 Maine 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 Bar Harbor, so the drivers have to be read from the category split above. The Maine guide’s account of Maine names birch, a signature spring pollen, released with maple and oak in a rapid April and May burst — the pollens behind readings of this shape in this state — and the split shows how much of today’s total each category is actually carrying.
Across the five-day window the Total Pollen Index runs from 6 to 13, never changing band. Today’s 6 sits 2 points below the window’s average of 8.2 — a moving window, worth reading day by day rather than from the average.
Plants affecting Bar Harbor now
Detailed plant-by-plant readings for Bar Harbor 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 1 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 8 (Low).
In the Northern New England pattern, the plants that typically shape this city’s year are spring birch, maple and oak, summer hayfield grasses and a short late-summer ragweed run — 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.
Bar Harbor pollen through the year
Chapter by chapter, the Bar Harbor pollen year runs like this:
- Alder and maple stir in late March in the south, and the burst crests through April and May — birch above all, with maple and oak — later with every mile north.
- Hayfield and pasture grasses own June and July, cresting around the first hay cutting.
- Ragweed runs August into September and is ended by an early first frost — earliest inland and in the north.
- Mold bookends the year — mud-season stirrings in March and leaf-litter mold returning in the fall — and the coast trades some pollen intensity for fog, damp and summer mold.
The Maine allergy season guide names birch, a signature spring pollen, released with maple and oak in a rapid April and May burst. Maine’s season is lengthening: Portland’s freeze-free growing season has expanded by about 16 days since 1970, according to WGME meteorologists’ reporting of climate data. The coast trades some pollen intensity for fog, damp and summer mold, while inland valleys get warmer, stiller air and the forest’s full output.
November falls between the main chapters of the Maine 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 7 months of the Maine year, March to September — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the Maine allergy season guide.
How to read this index
Pollen Atlas reports the Bar Harbor 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 Bar Harbor, ME 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.
Bar Harbor in today’s national picture
At 6 (Low), Bar Harbor ranks joint 84922nd of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Serpa, Portugal at 53, and the lowest is Galiakberovo, Russia at 5. The whole table spans 48 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Bar Harbor: Winter Harbor, ME (6 miles away) reads 6 (Low); Northeast Harbor, ME (7 miles away) reads 7 (Low); Southwest Harbor, ME (9 miles away) reads 7 (Low). Bar Harbor reads exactly level with its nearest tracked neighbour today. Across Maine’s 155 tracked cities, today runs from 5 in Lewiston to 11 in Fort Kent.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Bar Harbor resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Bar Harbor, ME 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.
Bar Harbor in its local area
Across Maine’s 155 tracked cities, Bar Harbor ranks joint 31st today.
Like every Pollen Atlas city page, the Bar Harbor, ME pollen count is refreshed each morning.
Nearby cities
- Winter Harbor pollen count (6 miles away)
- Northeast Harbor pollen count (7 miles away)
- Southwest Harbor pollen count (9 miles away)
- Blue Hill pollen count (18 miles away)
- Milbridge pollen count (19 miles away)
- Ellsworth pollen count (19 miles away)
From Pollen Atlas News
See how Bar Harbor 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).