Castel San Pietro Romano, Italy Pollen Count
Castel San Pietro Romano, Italy · Last updated Monday, November 9, 2026
This page shows the most recent reading available for Castel San Pietro Romano — from Monday, November 9, 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).
Castel San Pietro Romano, Italy
Trees Index
How active trees pollen is today (0–100).
Castel San Pietro Romano, Italy
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Castel San Pietro Romano Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
This reading is the forecast point shared with Cruci, Italy — 17 nearby places use the same point; Castel San Pietro Romano is 4.7 km from it.
Pollen count Castel San Pietro Romano residents check each morning
The Castel San Pietro Romano pollen count today is 16 (Low). No single plant stands out in today’s readings; the Tree category is the one the index is led by. The full split is tree pollen 16, grass pollen 0.6, weed pollen 3. Plant-by-plant detail for Castel San Pietro Romano, Italy follows, along with the outlook for the days ahead. Pollen Atlas updated this count on Monday, November 9, 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 tree pollen, reading noticeably higher than the rest, which is why the split is printed on every Castel San Pietro Romano page.
Today’s reading for this city is quiet across the board, and a quiet day is best understood comparatively: the split shows no category carrying the total, and the plant section shows nothing reading high. Seasonal expectations set the background — which pollen types are common in this region at this time of year — but they never override the modelled value. This page reports the modelled reading first, and uses seasonal context only to explain the shape of the numbers it has already shown.
To see whether today’s pollen level holds, check the 5-day Castel San Pietro Romano pollen forecast below — it is currently mixed, with Monday the highest day in the window.
This is the pollen count Castel San Pietro Romano residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Castel San Pietro Romano pollen count today?
The Castel San Pietro Romano pollen count today is 16 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Tree.
Short answer for anyone searching pollen count today Castel San Pietro Romano: this page is updated every morning with the day’s modelled reading.
Castel San Pietro Romano allergies today
Castel San Pietro Romano allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 16 (Low), driven mainly by Tree. When people ask about Castel San Pietro Romano allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Castel San Pietro Romano.
Allergies in Castel San Pietro Romano follow the Italy 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 Castel San Pietro Romano 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 Castel San Pietro Romano allergy forecast: today reads 16 (Low), and the day-by-day outlook shows whether Castel San Pietro Romano 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 Castel San Pietro Romano today records is this same combined reading — tree, grass, weed and mold in one index.
The Castel San Pietro Romano allergy count today is 16 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Castel San Pietro Romano: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Monday, November 9 | 16 | Low |
| Tuesday, November 10 | 7 | Low |
| Wednesday, November 11 | 15 | Low |
| Thursday, November 12 | 6 | Low |
| Friday, November 13 | 6 | Low |
Pollen Atlas forecasts Castel San Pietro Romano’s pollen count to peak on Monday at 16 (Low) over the next 5 days.
Pollen by type in Castel San Pietro Romano
What is driving Castel San Pietro Romano’s pollen today
The shape of today’s 16 (Low) is set by tree pollen at 16 (Low on its own scale) — about 82% of the four category readings added together, 13 points clear of the next category, weed pollen at 3. Tree readings are the fastest-moving of the four in their season, because species pollinate in sequence — a tree-led total can change character within a week. Tree pollen leading in November runs against the usual calendar — the Italy tree chapter runs January to May — 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 Castel San Pietro Romano, 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 6 to 16, never changing band. Today’s 16 sits 6 points above the window’s average of 10 — a moving window, worth reading day by day rather than from the average.
Plants affecting Castel San Pietro Romano now
Detailed plant-by-plant readings for Castel San Pietro Romano 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 0.6 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 3 (Low).
In the Mediterranean pattern, the plants that typically shape this city’s year are winter cypress and early hazel, spring grasses and olive, and late-summer weeds spread across a long, mild 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.
Castel San Pietro Romano pollen through the year
Chapter by chapter, the Castel San Pietro Romano pollen year runs like this:
- Cypress opens the year in winter, hazel and alder follow early, and olive carries the spring peak from April into May.
- Grasses build from spring and peak from April into June, earlier in the south.
- Weeds — pellitory through the warm months and ragweed in late summer where it has spread — close a long season that can run into November.
No Italy allergy season guide is published yet, so this page does not single out signature pollens for Castel San Pietro Romano — the calendar above is the Mediterranean regional pattern, and the plant detail on this page names what today’s feed actually records.
November in Castel San Pietro Romano sits inside the weed chapter of the Italy year, in its closing weeks — the part of the calendar today’s readings should be judged against. Between them, the three chapters cover 10 months of the Italy year, January to November — a long season by national standards, with only a short quiet gap. No Italy allergy season guide is published yet — this calendar follows the Mediterranean regional pattern. See Castel San Pietro Romano pollen count rankings and Castel San Pietro Romano on the pollen heatmap.
How to read this index
Pollen Atlas reports the Castel San Pietro Romano 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.
Castel San Pietro Romano in today’s national picture
At 16 (Low), Castel San Pietro Romano ranks joint 37326th of the 217874 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Zuoz, Switzerland at 66, and the lowest is Извор, North Macedonia at 5. The whole table spans 61 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Castel San Pietro Romano: Frainili, Italy (1 km away) reads 16 (Low); Casa Pallone, Italy (1 km away) reads 16 (Low); Palestrina, Italy (2 km away) reads 16 (Low). Castel San Pietro Romano reads exactly level with its nearest tracked neighbour today. Across Italy’s 43618 tracked cities, today runs from 5 in Verona to 64 in Trepalle.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Castel San Pietro Romano resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in Castel San Pietro Romano, Italy 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.
Castel San Pietro Romano in its local area
Castel San Pietro Romano is in Città metropolitana di Roma Capitale, Lazio, Italy. Its population is 411 (GeoNames).
Castel San Pietro Romano sits 8 km north-northwest of Cruci, Italy — the anchor of the forecast-point group this reading belongs to. Within the group of 17, Castel San Pietro Romano ranks joint 1st; across Italy’s 43618 tracked cities, it ranks joint 7737th today.
Like every Pollen Atlas city page, the Castel San Pietro Romano, Italy pollen count is refreshed each morning.
Nearby cities
- Frainili pollen count (1 km away)
- Casa Pallone pollen count (1 km away)
- Palestrina pollen count (2 km away)
- Fontanavazza pollen count (2 km away)
- Colle Doddo pollen count (3 km away)
- Località Colle Dolce pollen count (3 km away)
From Pollen Atlas News
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).