Boulder, WY Pollen Count
Boulder, WY · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Boulder — 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).
Boulder, WY
Grass Index
How active grass pollen is today (0–100).
Boulder, WY
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Boulder Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Boulder residents check each morning
The Boulder pollen count today is 5 (Low). No single plant stands out in today’s readings; the Grass category is the one the index is led by. The full split is tree pollen 0.6, grass pollen 2, weed pollen 0.6. Plant-by-plant detail for Boulder, WY 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 grass pollen, reading noticeably higher than the rest, which is why the split is printed on every Boulder page.
Outside its main late-spring and early-summer window, grass pollen usually appears as a small background value rather than the driver of the total. A low grass reading alongside a higher weed or mold value is a typical off-peak pattern. Grass should be read from its own value on this page, not assumed from the calendar: the index reports today’s modelled value, and the modelled value outranks any general seasonal expectation.
To see whether today’s pollen level holds, check the 5-day Boulder pollen forecast below — it is currently holding, with Friday the highest day in the window.
This is the pollen count Boulder residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Boulder pollen count today?
The Boulder pollen count today is 5 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Grass.
Short answer for anyone searching pollen count today Boulder: this page is updated every morning with the day’s modelled reading.
Boulder allergies today
Boulder allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 5 (Low), driven mainly by Grass. When people ask about Boulder allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Boulder.
Allergies in Boulder follow the Wyoming 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 Boulder 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 Boulder allergy forecast: today reads 5 (Low), and the day-by-day outlook shows whether Boulder 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 Boulder today records is this same combined reading — tree, grass, weed and mold in one index.
The Boulder allergy count today is 5 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Boulder: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 5 | Low |
| Saturday, November 7 | 5 | Low |
| Sunday, November 8 | 5 | Low |
| Monday, November 9 | 5 | Low |
| Tuesday, November 10 | 5 | Low |
Pollen Atlas forecasts Boulder’s pollen count to peak on Friday at 5 (Low) over the next 5 days.
Pollen by type in Boulder
What is driving Boulder’s pollen today
The shape of today’s 5 (Low) is set by grass pollen at 2 (Low on its own scale) — about 63% of the four category readings added together, 1.4 points clear of the next category, tree pollen at 0.6. Grass-led totals tend to hold a level for days at a time rather than spike and clear, because grasses pollinate over an extended period. Grass pollen leading in November runs against the usual calendar — the Wyoming grass chapter runs June to August — 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 Boulder, so the drivers have to be read from the category split above. The Wyoming guide’s account of Wyoming names sagebrush, the state’s signature allergen, flowering from August into October and peaking in September — 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 5 to 5, never changing band. Today’s 5 sits level with the window’s average of 5 — a steady window, in which one day reads much like the next.
Plants affecting Boulder now
Detailed plant-by-plant readings for Boulder 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 2 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 0.6 (Low).
In the High Basins pattern, the plants that typically shape this city’s year are river-corridor cottonwood and juniper, brief-summer meadow grasses, and sagebrush flowering late — 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.
Boulder pollen through the year
Chapter by chapter, the Boulder pollen year runs like this:
- Spring is a river-corridor season — cottonwood and juniper from March into May — because most of Wyoming’s trees grow where the water is.
- Meadow and hay grasses carry the brief summer, from June into August.
- Sagebrush flowers from August into October and peaks in September, and the first hard frost ends it.
The Wyoming allergy season guide names sagebrush, the state’s signature allergen, flowering from August into October and peaking in September. Spring is a river-corridor season — cottonwood and juniper from March into May — because most of Wyoming’s trees grow where the water is. Wind is a season-maker here: pollen routinely arrives from far beyond the local landscape, so a town’s bad day may be grown a basin away.
November falls between the main chapters of the Wyoming 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 8 months of the Wyoming year, March to October — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the Wyoming allergy season guide.
How to read this index
Pollen Atlas reports the Boulder 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 whatever the month. 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.
Boulder in today’s national picture
At 5 (Low), Boulder ranks joint 86157th 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 Boulder: Pinedale, WY (12 miles away) reads 5 (Low); Daniel, WY (20 miles away) reads 5 (Low); Cora, WY (21 miles away) reads 15 (Low). Boulder reads exactly level with its nearest tracked neighbour today. Across Wyoming’s 204 tracked cities, today runs from 5 in Casper to 31 in Dubois.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Boulder resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Boulder, WY 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.
Boulder in its local area
Across Wyoming’s 204 tracked cities, Boulder ranks joint 121st today.
Like every Pollen Atlas city page, the Boulder, WY pollen count is refreshed each morning.
Nearby cities
- Pinedale pollen count (12 miles away)
- Daniel pollen count (20 miles away)
- Cora pollen count (21 miles away)
- Marbleton pollen count (24 miles away)
- Big Piney pollen count (25 miles away)
- La Barge pollen count (42 miles away)
From Pollen Atlas News
See how Boulder 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).