Ruiru Pollen Count
Ruiru, Kenya · Last updated Thursday, November 5, 2026
This page shows the most recent reading available for Ruiru — from Thursday, November 5, 2026 (2 days 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).
Ruiru, Kenya
Weeds Index
How active weeds pollen is today (0–100).
Ruiru, Kenya
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Ruiru Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Ruiru residents check each morning
The Ruiru pollen count today is 21 (Low). The main driver is Ragweed, with weed pollen at 21 today. Grass pollen is the highest single category in the split at 22 (Low), ahead of weed pollen at 21 and tree pollen at 14. The sections below break that headline number down by plant, by day and by what the band means in practice. Pollen Atlas updated this count on Thursday, November 5, 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 Ruiru 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 Ruiru pollen forecast below — it is currently mixed, with Saturday the highest day in the window.
This is the pollen count Ruiru residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Ruiru pollen count today?
The Ruiru pollen count today is 21 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Ruiru: this page is updated every morning with the day’s modelled reading.
Ruiru allergies today
Ruiru allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 21 (Low), driven mainly by Ragweed. When people ask about Ruiru allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Ruiru.
Allergies in Ruiru follow the Kenya 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 Ruiru 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 Ruiru allergy forecast: today reads 21 (Low), and the day-by-day outlook shows whether Ruiru 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 Ruiru today records is this same combined reading — tree, grass, weed and mold in one index.
The Ruiru allergy count today is 21 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Ruiru: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Thursday, November 5 | 21 | Low |
| Friday, November 6 | 21 | Low |
| Saturday, November 7 | 30 | Low |
| Sunday, November 8 | 21 | Low |
| Monday, November 9 | 13 | Low |
Pollen Atlas forecasts Ruiru’s pollen count to peak on Saturday at 30 (Low) over the next 5 days.
Pollen by type in Ruiru
What is driving Ruiru’s pollen today
The shape of today’s 21 (Low) is set by grass pollen at 22 (Low on its own scale) — about 39% of the four category readings added together, 1 points clear of the next category, weed pollen at 21. 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 is a modelled reading, reported as modelled — no regional calendar is asserted for Kenya, and the modelled value outranks any general seasonal expectation.
Plant-level detail is not in today’s feed for Ruiru, so the drivers have to be read from the category split above — it shows how much of today’s total each category is actually carrying, and plant detail returns here automatically on any day the feed includes it.
Across the five-day window the Total Pollen Index runs from 13 to 30, never changing band. Today’s 21 sits 0 points below the window’s average of 21.2 — a moving window, worth reading day by day rather than from the average.
Plants affecting Ruiru now
Detailed plant-by-plant readings for Ruiru 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 14 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 22 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 21 (Low).
In the Global pattern, the plants that shape this city’s year vary with its local climate and vegetation, and no single regional calendar is published for this area — 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.
Ruiru pollen through the year
The Ruiru pollen year runs in chapters, set by the Global pattern and the Kenya calendar. Trees come first: tree pollen seasons vary with local climate and vegetation, so this page reports the measured readings first and treats any calendar as background only. Grasses take the middle of the year: grass pollen seasons vary with local climate and vegetation, and the measured value outranks any general seasonal expectation. Weeds close it out: weed pollen seasons vary with local climate and vegetation, and no regional calendar is asserted for this area.
No Kenya allergy season guide is published yet, so this page does not single out signature pollens for Ruiru — the calendar above is the Global regional pattern, and the plant detail on this page names what today’s feed actually records.
November in Ruiru is reported from its modelled readings, not from a regional calendar — no regional calendar is asserted for Kenya, so the calendar alone explains little today, and the modelled split above carries the story. No Kenya allergy season guide is published yet — this calendar follows the Global regional pattern. See Ruiru pollen count rankings and Ruiru on the pollen heatmap.
How to read this index
Pollen Atlas reports the Ruiru 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 Ruiru, Kenya 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.
Ruiru in today’s national picture
At 21 (Low), Ruiru ranks joint 47143rd 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 Ruiru: Thika, Kenya (17 km away) reads 13 (Low); Nairobi, Kenya (22 km away) reads 28 (Low); Mwala, Kenya (59 km away) reads 23 (Low). Ruiru reads 8 points higher than its nearest tracked neighbour today. Across Kenya’s 11 tracked cities, today runs from 10 in Kakamega to 33 in Matuga.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Ruiru resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Ruiru, Kenya 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.
Ruiru in its local area
Ruiru is in Kiambu County, Kenya. Its population is 490,120 (GeoNames).
Across Kenya’s 11 tracked cities, Ruiru ranks 5th today.
Like every Pollen Atlas city page, the Ruiru, Kenya pollen count is refreshed each morning.
Nearby cities
- Thika pollen count (17 km away)
- Nairobi pollen count (22 km away)
- Mwala pollen count (59 km away)
- Naivasha pollen count (76 km away)
- Nakuru pollen count (136 km away)
- Eldoret pollen count (264 km away)
From Pollen Atlas News
See how Ruiru 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).