Derwood, MD Pollen Count
Derwood, MD · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Derwood — 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).
Derwood, MD
Weeds Index
How active weeds pollen is today (0–100).
Derwood, MD
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Derwood Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Derwood residents check each morning
The Derwood pollen count today is 15 (Low). The main driver is Ragweed, with weed pollen at 20 today. That total sits on a narrow base: weed pollen is 20 while tree pollen is just 0.6 and grass pollen 1. Plant-by-plant detail for Derwood, MD 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 Derwood 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. In the Northeast, autumn weed pollen typically winds down as colder nights arrive, so late-season totals can change quickly from week to week.
To see whether today’s pollen level holds, check the 5-day Derwood pollen forecast below — it is currently rising, with Saturday the highest day in the window.
This is the pollen count Derwood residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Derwood pollen count today?
The Derwood pollen count today is 15 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Derwood: this page is updated every morning with the day’s modelled reading.
Derwood allergies today
Derwood allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 15 (Low), driven mainly by Ragweed. When people ask about Derwood allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Derwood.
Allergies in Derwood follow the Maryland 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 Derwood 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 Derwood allergy forecast: today reads 15 (Low), and the day-by-day outlook shows whether Derwood 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 Derwood today records is this same combined reading — tree, grass, weed and mold in one index.
The Derwood allergy count today is 15 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Derwood: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 15 | Low |
| Saturday, November 7 | 22 | Low |
| Sunday, November 8 | 22 | Low |
| Monday, November 9 | 22 | Low |
| Tuesday, November 10 | 22 | Low |
Pollen Atlas forecasts Derwood’s pollen count to peak on Saturday at 22 (Low) over the next 5 days.
Pollen by type in Derwood
What is driving Derwood’s pollen today
The shape of today’s 15 (Low) is set by weed pollen at 20 (Low on its own scale) — about 93% of the four category readings added together, 19 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 Maryland weed chapter runs August to October — 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 Derwood, so the drivers have to be read from the category split above. The Maryland guide’s account of Maryland names oak, the mid-Atlantic heavyweight, peaking hard in late April and May — 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 15 to 22, never changing band. Today’s 15 sits 6 points below the window’s average of 20.6 — a moving window, worth reading day by day rather than from the average.
Plants affecting Derwood now
Detailed plant-by-plant readings for Derwood 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 20 (Low).
In the Northeast pattern, the plants that typically shape this city’s year are spring trees, late-spring grasses and late-summer ragweed — 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.
Derwood pollen through the year
Chapter by chapter, the Derwood pollen year runs like this:
- Trees open in late March and build to an oak-led peak in May.
- Grasses hold from late May into July.
- Ragweed builds from mid-August, peaks in September, and is ended by the first hard frost.
- Mold tracks the region’s humidity rather than a flowering calendar, and it fills the gaps between chapters.
The Maryland allergy season guide names oak, the mid-Atlantic heavyweight, peaking hard in late April and May. Around the Chesapeake, sustained tidewater humidity grows mold that fills the gap between the grass fade and the ragweed build. Garrett County’s western mountains run weeks behind the bay in spring and finish weeks earlier in fall, with harder, sooner frosts.
November falls between the main chapters of the Maryland 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 Maryland year, March to October — a compressed season, which is why its chapters arrive in quick succession. The full calendar is set out in the Maryland allergy season guide.
How to read this index
Pollen Atlas reports the Derwood 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 Derwood, MD 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.
Derwood in today’s national picture
At 15 (Low), Derwood ranks joint 66640th 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 Derwood: Redland, MD (1 miles away) reads 9 (Low); Rockville, MD (2 miles away) reads 15 (Low); Washington Grove, MD (2 miles away) reads 15 (Low). Derwood reads 6 points higher than its nearest tracked neighbour today. Across Maryland’s 534 tracked cities, today runs from 5 in Annapolis to 26 in Fountainhead-Orchard Hills.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Derwood resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Derwood, MD 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.
Derwood in its local area
Across Maryland’s 534 tracked cities, Derwood ranks joint 79th today.
Like every Pollen Atlas city page, the Derwood, MD pollen count is refreshed each morning.
Nearby cities
- Redland pollen count (1 miles away)
- Rockville pollen count (2 miles away)
- Washington Grove pollen count (2 miles away)
- Gaithersburg pollen count (3 miles away)
- Aspen Hill pollen count (4 miles away)
- Flower Hill pollen count (4 miles away)
From Pollen Atlas News
See how Derwood 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).