Yorba Linda, CA Pollen Count Today
Yorba Linda, CA · Updated Saturday, November 7, 2026
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).
Yorba Linda, CA
Weeds Index
How active weeds pollen is today (0–100).
Yorba Linda, CA
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Yorba Linda Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Yorba Linda residents check each morning
The Yorba Linda pollen count today is 31 (Low). The main driver is Ragweed, with weed pollen at 37 today. That total sits on a narrow base: weed pollen is 37 while tree pollen is just 21 and grass pollen 4. Plant-by-plant detail for Yorba Linda, CA follows, along with the outlook for the days ahead. Pollen Atlas updated this count on Saturday, November 7, 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 Yorba Linda 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 Yorba Linda pollen forecast below — it is currently holding, with Saturday the highest day in the window.
This is the pollen count Yorba Linda residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Yorba Linda pollen count today?
The Yorba Linda pollen count today is 31 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Yorba Linda: this page is updated every morning with the day’s modelled reading.
Yorba Linda allergies today
Yorba Linda allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 31 (Low), driven mainly by Ragweed. When people ask about Yorba Linda allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Yorba Linda.
Allergies in Yorba Linda follow the California 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 Yorba Linda 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 Yorba Linda allergy forecast: today reads 31 (Low), and the day-by-day outlook shows whether Yorba Linda 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 Yorba Linda today records is this same combined reading — tree, grass, weed and mold in one index.
The Yorba Linda allergy count today is 31 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Yorba Linda: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 31 | Low |
| Sunday, November 8 | 31 | Low |
| Monday, November 9 | 28 | Low |
| Tuesday, November 10 | 28 | Low |
| Wednesday, November 11 | 27 | Low |
Pollen Atlas forecasts Yorba Linda’s pollen count to peak on Saturday at 31 (Low) over the next 5 days.
Pollen by type in Yorba Linda
What is driving Yorba Linda’s pollen today
The shape of today’s 31 (Low) is set by weed pollen at 37 (Low on its own scale) — about 60% of the four category readings added together, 16 points clear of the next category, tree pollen at 21. 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 California 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 Yorba Linda, so the drivers have to be read from the category split above. The California guide’s account of California names planted olive and the Central Valley’s concentrated spring pollen — 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 27 to 31, never changing band. Today’s 31 sits 2 points above the window’s average of 29 — a steady window, in which one day reads much like the next.
Plants affecting Yorba Linda now
Detailed plant-by-plant readings for Yorba Linda 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 21 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 4 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 37 (Low).
In the California pattern, the plants that typically shape this city’s year are winter and spring trees, late-spring grasses and late-summer weeds — 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.
Yorba Linda pollen through the year
Chapter by chapter, the Yorba Linda pollen year runs like this:
- Trees build through spring, with planted olive peaking from March into May.
- Grasses peak in spring in the Central Valley and run longer and milder on the coast.
- Weeds follow in late summer and fall, stronger after wet winters.
The California allergy season guide names planted olive and the Central Valley’s concentrated spring pollen. There is no single California season: the Central Valley records some of the state’s sharpest spring peaks, trapped and concentrated by valley geography, while the coast runs long and mild. The AAFA’s 2025 Allergy Capitals research noted upward movement for several California cities, attributed to grass and weed pollen after wet weather.
November falls between the main chapters of the California 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 9 months of the California year, February to October — leaving a quiet gap of roughly 3 months in the depth of the off-season. The full calendar is set out in the California allergy season guide.
How to read this index
Pollen Atlas reports the Yorba Linda 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 Yorba Linda, CA 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.
Yorba Linda in today’s national picture
At 31 (Low), Yorba Linda ranks joint 12607th 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 Yorba Linda: Anaheim, CA (2 miles away) reads 31 (Low); Chino Hills, CA (5 miles away) reads 30 (Low); Placentia, CA (5 miles away) reads 32 (Low). Yorba Linda reads exactly level with its nearest tracked neighbour today. Across California’s 1602 tracked cities, today runs from 5 in Truckee to 42 in Mecca.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Yorba Linda resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Yorba Linda, CA 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.
Yorba Linda in its local area
Yorba Linda is a city in Orange County, California. Its population is 67,407 (ACS 2023).
Across California’s 1602 tracked cities, Yorba Linda ranks joint 72nd today.
Like every Pollen Atlas city page, the Yorba Linda, CA pollen count is refreshed each morning.
Nearby cities
- Anaheim pollen count (2 miles away)
- Chino Hills pollen count (5 miles away)
- Placentia pollen count (5 miles away)
- Villa Park pollen count (5 miles away)
- Brea pollen count (6 miles away)
- Diamond Bar pollen count (8 miles away)
From Pollen Atlas News
See how Yorba Linda ranks in today's pollen count rankings — the worst cities for allergies today
See Yorba Linda 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).