San Carlos, AZ Pollen Count Today
San Carlos, AZ · 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).
San Carlos, AZ
Weeds Index
How active weeds pollen is today (0–100).
San Carlos, AZ
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day San Carlos Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count San Carlos residents check each morning
The San Carlos pollen count today is 18 (Low). The main driver is Ragweed, with weed pollen at 20 today. The full split is tree pollen 19, grass pollen 2, weed pollen 20. 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 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 San Carlos page.
Desert Southwest pollen does not follow a single national calendar. Arid conditions limit some pollen types for much of the year, while irrigated urban landscaping introduces trees and grasses that would not otherwise grow in the desert, and wind can move pollen across an open landscape efficiently. Readings in this region in particular should be judged against their own split and their own recent days, not against humid-region expectations: a low total here reflects today’s modelled categories, whatever the month.
To see whether today’s pollen level holds, check the 5-day San Carlos pollen forecast below — it is currently holding, with Saturday the highest day in the window.
This is the pollen count San Carlos residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the San Carlos pollen count today?
The San Carlos pollen count today is 18 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today San Carlos: this page is updated every morning with the day’s modelled reading.
San Carlos allergies today
San Carlos allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 18 (Low), driven mainly by Ragweed. When people ask about San Carlos allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for San Carlos.
Allergies in San Carlos follow the Arizona 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 San Carlos 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 San Carlos allergy forecast: today reads 18 (Low), and the day-by-day outlook shows whether San Carlos 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 San Carlos today records is this same combined reading — tree, grass, weed and mold in one index.
The San Carlos allergy count today is 18 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today San Carlos: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Saturday, November 7 | 18 | Low |
| Sunday, November 8 | 18 | Low |
| Monday, November 9 | 16 | Low |
| Tuesday, November 10 | 16 | Low |
| Wednesday, November 11 | 16 | Low |
Pollen Atlas forecasts San Carlos’s pollen count to peak on Saturday at 18 (Low) over the next 5 days.
Pollen by type in San Carlos
What is driving San Carlos’s pollen today
The shape of today’s 18 (Low) is set by weed pollen at 20 (Low on its own scale) — about 49% of the four category readings added together, 1 points clear of the next category, tree pollen at 19. 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 is the Arizona calendar working as expected — November falls in the closing weeks of the state’s weed chapter.
Plant-level detail is not in today’s feed for San Carlos, so the drivers have to be read from the category split above. The Arizona guide’s account of Arizona names mulberry, ash and olive — planted trees, not wild desert flora — 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 16 to 18, never changing band. Today’s 18 sits 1 point above the window’s average of 16.8 — a steady window, in which one day reads much like the next.
Plants affecting San Carlos now
Detailed plant-by-plant readings for San Carlos 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 19 (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 20 (Low).
In the Desert Southwest pattern, the plants that typically shape this city’s year are irrigated landscape trees and grasses, with wind-carried weeds in open ground — 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.
San Carlos pollen through the year
The San Carlos pollen year runs in chapters, set by the Desert Southwest pattern and the Arizona calendar. Trees come first: planted trees open in winter — the juniper family and ash first, mulberry at the heart of spring. Grasses take the middle of the year: irrigated Bermuda grass runs long rather than intense, across much of the warm season. Weeds close it out: a final weed wave follows the monsoon rains into fall, with monsoon mold in the same weeks.
The Arizona allergy season guide names mulberry, ash and olive — planted trees, not wild desert flora. Arizona’s season arrives in waves shaped by desert botany and desert weather, with a midsummer heat lull and a mold bump when the monsoon breaks. Phoenix and Tucson often peak weeks apart: Tucson sits at roughly 2,400 feet against Phoenix’s 1,100, and its cooler nights delay its tree wave by a matter of weeks.
November in San Carlos sits in the overlap of the grass and weed chapters of the Arizona year — overlap weeks, when two chapters feed the same total and the split matters more than the headline. Between them, the three chapters cover 11 months of the Arizona year, January to November — a long season by national standards, with only a short quiet gap. The full calendar is set out in the Arizona allergy season guide.
How to read this index
Pollen Atlas reports the San Carlos 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.
San Carlos in today’s national picture
At 18 (Low), San Carlos ranks joint 57574th 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 San Carlos: Peridot, AZ (3 miles away) reads 18 (Low); Cutter, AZ (11 miles away) reads 16 (Low); East Globe, AZ (13 miles away) reads 16 (Low). San Carlos reads exactly level with its nearest tracked neighbour today. Across Arizona’s 465 tracked cities, today runs from 5 in Fort Valley to 36 in Rillito.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one San Carlos resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in San Carlos, AZ 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.
San Carlos in its local area
Across Arizona’s 465 tracked cities, San Carlos ranks joint 269th today.
Like every Pollen Atlas city page, the San Carlos, AZ pollen count is refreshed each morning.
Nearby cities
- Peridot pollen count (3 miles away)
- Cutter pollen count (11 miles away)
- East Globe pollen count (13 miles away)
- Globe pollen count (16 miles away)
- Pinal pollen count (16 miles away)
- Copper Hill pollen count (17 miles away)
From Pollen Atlas News
See how San Carlos 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).