Honolulu, HI Pollen Count
Honolulu, HI · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Honolulu — 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).
Honolulu, HI
Weeds Index
How active weeds pollen is today (0–100).
Honolulu, HI
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Honolulu Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Honolulu residents check each morning
The Honolulu pollen count today is 17 (Low). The main driver is Ragweed, with weed pollen at 18 today. Weed pollen leads the split at 18 (Low on its own scale), followed by tree pollen at 16 and grass pollen at 13. Below, the plant detail and the multi-day outlook show whether today is the pattern or the exception. 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 Honolulu 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 Honolulu pollen forecast below — it is currently holding, with Friday the highest day in the window.
This is the pollen count Honolulu residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Honolulu pollen count today?
The Honolulu pollen count today is 17 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Honolulu: this page is updated every morning with the day’s modelled reading.
Honolulu allergies today
Honolulu allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 17 (Low), driven mainly by Ragweed. When people ask about Honolulu allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Honolulu.
Allergies in Honolulu follow the Hawaii 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 Honolulu 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 Honolulu allergy forecast: today reads 17 (Low), and the day-by-day outlook shows whether Honolulu 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 Honolulu today records is this same combined reading — tree, grass, weed and mold in one index.
The Honolulu allergy count today is 17 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Honolulu: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 17 | Low |
| Saturday, November 7 | 17 | Low |
| Sunday, November 8 | 17 | Low |
| Monday, November 9 | 17 | Low |
| Tuesday, November 10 | 17 | Low |
Pollen Atlas forecasts Honolulu’s pollen count to peak on Friday at 17 (Low) over the next 5 days.
Pollen by type in Honolulu
What is driving Honolulu’s pollen today
The shape of today’s 17 (Low) is set by weed pollen at 18 (Low on its own scale) — about 38% of the four category readings added together, 2 points clear of the next category, tree pollen at 16. 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 Hawaii calendar working as expected — November falls in the opening weeks of the state’s weed chapter.
Plant-level detail is not in today’s feed for Honolulu, so the drivers have to be read from the category split above. The Hawaii guide’s account of Hawaii names kiawe, flowering most heavily in late winter and spring, and grasses that pollinate in nearly every month — 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 17 to 17, never changing band. Today’s 17 sits level with the window’s average of 17 — a steady window, in which one day reads much like the next.
Plants affecting Honolulu now
Detailed plant-by-plant readings for Honolulu 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 16 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 13 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 18 (Low).
In the Hawaii pattern, the plants that typically shape this city’s year are grasses that pollinate in nearly every month and kiawe flowering most heavily in late winter and spring, with mold in the wet 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.
Honolulu pollen through the year
Three chapters make the Hawaii pollen year, and Honolulu follows them in the state’s own order. The tree chapter: kiawe, the signature tree of the dry leeward lowlands, flowers most heavily in late winter and spring, in overlapping waves rather than a single spring flush. The grass chapter: grasses pollinate in nearly every month, with the strongest run from spring into summer and a peak from March through August. The weed chapter: the guides name no separate weed chapter for Hawaii — the year is carried by grasses, tree waves and wet-season mold. The wet season, roughly November through April, shifts the burden toward mold and indoor damp even as outdoor pollen eases in places.
Hawaii has no frost and no true off-season: grasses pollinate in nearly every month, with the strongest grass run from spring into summer. Windward towns trade some dry pollen for persistent damp and mold, while leeward towns trade mold for dust, grass pollen and, on Hawaii Island, vog. The Hawaii guide singles out kiawe, flowering most heavily in late winter and spring, and grasses that pollinate in nearly every month.
November in Honolulu sits in the overlap of the grass and weed chapters of the Hawaii year — overlap weeks, when two chapters feed the same total and the split matters more than the headline. Between them, the three chapters touch every month of the Hawaii year — there is no reliably empty month in this calendar. The full calendar is set out in the Hawaii allergy season guide.
How to read this index
Pollen Atlas reports the Honolulu 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 Honolulu, HI 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.
Honolulu in today’s national picture
At 17 (Low), Honolulu ranks joint 60578th 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 Honolulu: Maunawili, HI (6 miles away) reads 14 (Low); Halawa, HI (6 miles away) reads 15 (Low); Aiea, HI (7 miles away) reads 15 (Low). Honolulu reads 3 points higher than its nearest tracked neighbour today. Across Hawaii’s 163 tracked cities, today runs from 7 in Mountain View to 25 in Waikoloa Beach Resort.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Honolulu resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in Honolulu, HI 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.
Honolulu in its local area
Honolulu is a census-designated place in Honolulu County, Hawaii. Its population is 346,323 (ACS 2023).
Across Hawaii’s 163 tracked cities, Honolulu ranks joint 38th today.
Like every Pollen Atlas city page, the Honolulu, HI pollen count is refreshed each morning.
Nearby cities
- Maunawili pollen count (6 miles away)
- Halawa pollen count (6 miles away)
- Aiea pollen count (7 miles away)
- Heeia pollen count (7 miles away)
- Hickam Housing pollen count (7 miles away)
- Kaneohe pollen count (7 miles away)
From Pollen Atlas News
See how Honolulu ranks in today's pollen count rankings — the worst cities for allergies today
See Honolulu on the US pollen map
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).